Geometrical meaning of the zeroes of a polynomial.

Correct answer: A. Where the graph cuts the x-axis

Explanation: A zero (root) of the polynomial is an x-value where \(p(x)=0\). On the graph the y-coordinate equals \(p(x)\), so when \(p(x)=0\) the point lies on the x-axis (where \(y=0\)). Why others are wrong: (B) the y-axis corresponds to \(x=0\), not \(p(x)=0\). (C) a highest point (maximum) need not have \(y=0\). (D) any point with \(p(x)\neq 0\) cannot be a zero. Exam tip: remember “zero of p(x)” means the graph crosses or touches the x-axis at that x-value (i.e. \(y=0\)).

Correct answer: A. One

Explanation: The number of real zeroes equals the number of times the graph cuts the (x)-axis. Tip: a linear polynomial has at most one zero.

Correct answer: A. Two

Explanation: The direct answer is option A: two real zeroes. For a polynomial graph, a real zero is an x-value where the graph lies on the x-axis, meaning the polynomial value is 0. The quadratic graph cuts the x-axis at two distinct points. Thus there are two distinct x-values that make the polynomial zero, so there are two real zeroes. Option A is correct. Option B is wrong because one real zero would mean only one x-axis point, usually when a parabola touches the axis once. Option C is wrong because zero real zeroes would mean the graph never meets the x-axis. Option D is wrong because a quadratic can have at most two real zeroes, and the question already identifies two intersections, not four. The phrase “two distinct points” is important: it guarantees two different x-values rather than one repeated root. A quadratic may have two, one, or zero real zeroes depending on its intersections with the x-axis. Memory cue: two distinct x-axis crossings of a parabola mean two real roots.

Correct answer: A. One

Explanation: A zero of a polynomial is represented by a point where its graph meets the x-axis. When a parabola only touches the x-axis, it meets the axis at exactly one point, so it has one distinct real zero. Algebraically, this corresponds to a repeated real root and the quadratic has discriminant zero. Thus the root may occur twice in factor form, but the number of distinct real zeroes is one, not two.

Correct answer: A. Zero

Explanation: There is no (x)-axis intersection so there is no real zero. Tip: count only meetings with the (x)-axis.

Correct answer: A. \((4)\) is a zero (root) of the polynomial

Explanation: The point \((4,0)\) means the polynomial value is \(p(4)=0\), so 4 is a root (zero) of the polynomial. Option B is wrong because 0 would be a root only if \(x=0\) (i.e. point \((0,0)\) or \(p(0)=0\)); here x=4. Option C is incorrect because a y-intercept occurs at \(x=0\), not at \(x=4\). Option D is wrong since a single x-intercept does not imply the polynomial is constant. Exam tip: x-intercepts \((a,0)\) correspond to roots a; to find y-intercept set \(x=0\).

Correct answer: A. 0

Explanation: Passing through the origin (0,0) means p(0)=0, so x=0 is necessarily a root of the polynomial. Other choices (1, -1, 2) would be roots only if p(1)=0, p(-1)=0, or p(2)=0 respectively; the graph passing through the origin does not guarantee those. Exam tip: substitute x=0 into the polynomial to check quickly whether 0 is a root.

Correct answer: A. -2

Explanation: The zero of a polynomial is the x-value where its graph intersects the x-axis (y=0). Since the graph intersects the x-axis at -2, the zero is -2. Option B (2) is the sign-opposite and therefore incorrect; options C (0) and D (-1) do not match the given intercept. Exam tip: remember that x-axis intersections give x-values (y=0) and always double-check the sign.

Correct answer: A. (-3) and (5)

Explanation: The x-intercepts give the x-values where the function equals zero (y = 0). Since the graph meets the x-axis at x = -3 and x = 5, the real zeros are x = -3 and x = 5. A close distractor is option C (-3 and -5) which has the first value correct but the second with the wrong sign. Exam tip: always use the x-coordinate of x-axis intersections as zeros and double-check the signs.

Correct answer: A. Zero

Explanation: A graph parallel to the x-axis is a horizontal line of the form \(y=c\). If it does not intersect the x-axis then \(c\neq 0\). Roots are solutions of \(p(x)=0\); here the polynomial equals the nonzero constant \(c\), so there is no solution and hence zero zeroes. The distractor "one" would apply if the graph merely touched the x-axis (a single root), while "infinite" applies when \(c=0\) (the graph lies on the x-axis and every x is a root). Exam tip: for horizontal lines check whether the constant equals zero to decide roots.

Correct answer: A. (7, 0)

Explanation: An x-intercept occurs where the polynomial equals zero, i.e. \(p(x)=0\). For \(p(x)=x-7\), solving \(x-7=0\) gives \(x=7\), so the point is (7, 0). Option B (−7, 0) is incorrect because that would correspond to \(x=-7\), not a root of this polynomial. Exam tip: set the polynomial equal to zero and solve for x to find x-axis intersections.

Correct answer: A. (-4, 0)

Explanation: An x-axis intersection (x-intercept) occurs where the polynomial equals zero (i.e. \(p(x)=0\)) so the y-coordinate is 0. For \(p(x)=x+4\), setting \(x+4=0\) gives \(x=-4\), hence the intercept is \((-4,0)\). Option B (4,0) is incorrect due to the wrong sign; options C and D are points on the y-axis (x=0), not x-axis intercepts. Exam tip: to find x-intercepts, set the function equal to zero and solve for x.

Correct answer: A. 3

Explanation: Set the polynomial equal to zero: \(p(x)=0\) ⇒ \(2x-6=0\). Solving gives \(x=3\), so the root on the graph is at \(x=3\). Why other choices fail: for \(x=2\), \(p(2)=-2\) and for \(x=6\), \(p(6)=6\); neither is zero. Exam tip: always start with \(p(x)=0\) and solve the resulting linear equation directly.

Correct answer: A. 0

Explanation: Any point on the x‑axis has y = 0. Since the graph crosses the x‑axis at (6, 0), the function value p(6) is 0. Option B (6) is misleading because 6 is the x‑coordinate, not the y‑value. Exam tip: an intersection with the x‑axis always means the function value at that x is 0 (p(x)=0).

Correct answer: A. The graph passes through \((-1,0)\)

Explanation: The statement \(p(-1)=0\) means at \(x=-1\) the value \(y=p(x)\) is zero, so the point \((-1,0)\) lies on the graph. Option B is incorrect because that would require \(p(0)=-1\), which is not given. Option C is wrong since intersection with the y-axis depends on \(p(0)\), not on \(p(-1)\). Option D is false because only degree‑1 polynomials are straight lines. Exam tip: x-intercepts come from solving \(p(x)=0\); the y-intercept is \(p(0)\).

Correct answer: A. No — because p(0) = 5 60;0

Explanation: A zero x = α of a polynomial satisfies p(α)=0. The point (0,5) means p(0)=5, which is not zero, so x=0 is not a zero. A common distractor says “x=0 so it is a zero”; that is wrong because being at x=0 does not force p(0)=0. Exam tip: always substitute the x-coordinate into p(x) and check whether the value equals 0 before calling it a zero.

Correct answer: A. 2

Explanation: A zero of a polynomial is an x-value for which the polynomial’s value is zero. Geometrically, it is the x-coordinate of a point where the graph meets the x-axis. The word “touches” does not change this definition: a graph may cross the axis or merely touch it, and either event gives a zero. At the point (2, 0), the x-coordinate is 2 and the y-coordinate is 0, so f(2) = 0. Therefore the zero is 2, and option A is correct. Option B confuses the y-coordinate with the required input; option C invents an additional zero not shown by the graph; and option D is wrong because touching the x-axis still counts as meeting it and establishes a zero.

Correct answer: A. Zero

Explanation: The graph can stay above the (x)-axis so there is no real zero. Tip: if there is no intersection do not write a zero.

Correct answer: A. (1, 0) and (4, 0)

Explanation: If a polynomial has a zero a, its graph meets the x-axis at (a,0) because the y-value is zero there. So zeros 1 and 4 give intersection points (1,0) and (4,0). Option B is wrong because those are points on the y-axis, C is wrong since y≠0 at those coordinates, and D is wrong because the signs of the zeros are incorrect. Exam tip: Always convert a zero a to the point (a,0) on the graph.

Correct answer: A. -3

Explanation: The x-coordinates where the graph meets the x-axis are the zeros. Here the zeros are -5 and 2, so their sum = -5 + 2 = -3. Option B (3) is wrong because it ignores the negative sign of -5; option C (7) would be the sum of absolute values (5 + 2) which is a sign error; option D (-7) assumes both were negative. Exam tip: always take the x-values of x-intercepts and keep their signs before adding.

Correct answer: A. −6

Explanation: The x-intercepts of a polynomial graph give its zeroes. From the points (−2, 0) and (3, 0), the zeroes are −2 and 3. Their product is calculated directly: (−2) × 3 = −6. Therefore option A is correct. The y-coordinate is zero for both points because they lie on the x-axis, but it is not used when multiplying the zeroes; the zeroes are the x-coordinates. Option B loses the negative sign, option C could arise from adding the zeroes instead of multiplying them because −2 + 3 = 1, and option D is not the product or sum of the given values. The graph information is sufficient without knowing the polynomial’s leading coefficient.

Correct answer: A. 0 and 3

Explanation: Zeros of a polynomial are the x-values where its graph meets the x-axis (y = 0). The given points (0,0) and (3,0) have x-coordinates 0 and 3, so the zeros are 0 and 3. Distractor C wrongly uses -3 instead of 3 (wrong sign). Options B and D fail to include both intercepts. Exam tip: read the x-coordinate of each x-intercept — its y-value must be zero.

Correct answer: A. Three

Explanation: The geometrical meaning of a zero is the x-coordinate of a point where the graph of p(x) meets or crosses the x-axis. On the x-axis, y = 0, so every distinct intersection represents a distinct real solution of p(x) = 0. The graph in the question has three different intersection points; therefore it has three different real zeroes. The fact that the polynomial is cubic is consistent with this result, since a cubic can have at most three real zeroes. Option B and Option C undercount the visible intersections, while Option D would mean that the graph never met the x-axis. Hence Option A is correct.

Correct answer: A. Zero (root)

Explanation: A root (zero) of a polynomial is an x-value where the polynomial evaluates to 0. For the zero polynomial \(p(x)=0\), the polynomial equals 0 for every real x, so every x is a root. The distractors B and C are incorrect because they restrict roots to only positive or only negative numbers, whereas the zero polynomial has every real number as a root. Exam tip: treat the zero polynomial as a special case — its set of roots is the entire domain (all real numbers).

Correct answer: A. It is parallel to the (x)-axis and does not cut it

Explanation: The direct answer is option A: the graph is parallel to the x-axis and does not cut it. For p(x) = 5, the output is 5 for every value of x. Thus the graph consists of all points (x, 5), which form a horizontal straight line five units above the x-axis. Since its y-coordinate is always 5 and never 0, the graph has no zero and cannot meet or cut the x-axis. Option A is correct. Option B is wrong because a horizontal line at y = 5 does not intersect the x-axis twice; it does not intersect it at all. Option C is wrong because the origin (0, 0) is not on the graph; at x = 0 the point is (0, 5). Option D is wrong because a graph parallel to the y-axis is vertical, whereas this constant graph is horizontal. The adjective “non-zero” matters: p(x) = 0 would be the x-axis itself, but p(x) = 5 is a separate horizontal line. Memory cue: constant output gives a horizontal line; non-zero constant means no x-axis intersection.