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Subjects

Mathematics

Slope and y-intercept

In this Class 9 Mathematics topic, students learn to read and interpret the slope and y-intercept of a straight-line graph. They explore slope as the rate of change, calculate it from points or an equation, and understand the y-intercept as the point where the graph meets the y-axis. The topic also connects coefficients in simple algebraic expressions with graphical features, strengthening algebraic thinking in the context of the Introduction to Polynomials chapter.

Easy · Level 5 · 25 questions

TOPIC PRACTICE

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Up to 25 questions from this page. Select your focus, then start.

25 questions

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  1. 6
  2. 2
  3. 8
  4. 0
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  1. 7
  2. -5
  3. 5
  4. -7
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  1. The line crosses the y-axis at −2 and has slope 3.
  2. The line crosses the y-axis at 3 and has slope −2.
  3. The line crosses the x-axis at −2 and has slope 3.
  4. The line crosses the y-axis at 2 and has slope −3.
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  1. 13
  2. 5
  3. 18
  4. -5
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  1. 11
  2. 3
  3. 14
  4. 0
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  1. \(4\)
  2. \(-9\)
  3. \(9\)
  4. \(-4\)
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  1. 0
  2. -8
  3. 8
  4. 1
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  1. 0
  2. 17
  3. -17
  4. Undefined
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  1. \(y=3x+8\)
  2. \(y=8x-3\)
  3. \(y=8x+3\)
  4. \(y=-8x+3\)
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  1. \(y=5x+6\)
  2. \(y=6x-5\)
  3. \(y=-6x+5\)
  4. \(y=-5x+6\)
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  1. 0
  2. 12
  3. -12
  4. 1
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  1. -2
  2. -11
  3. 11
  4. 2
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  1. 7
  2. 26
  3. 19
  4. 12
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  1. Slope 24, y-intercept -6
  2. Slope 6, y-intercept 24
  3. Slope -24, y-intercept 6
  4. Slope -6, y-intercept 24
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  1. Slope \(4\), \(y\)-intercept \(-10\)
  2. Slope \(-10\), \(y\)-intercept \(4\)
  3. Slope \(10\), \(y\)-intercept \(4\)
  4. Slope \(-4\), \(y\)-intercept \(10\)
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  1. Slope 15, y-intercept -1
  2. Slope -1, y-intercept 15
  3. Slope 1, y-intercept 15
  4. Slope -15, y-intercept 1
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  1. 7
  2. \(\frac{5}{3}\)
  3. \(\frac{3}{5}\)
  4. \(\frac{7}{5}\)
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  1. \(-\frac{7}{8}\)
  2. \(-4\)
  3. \(\frac{7}{8}\)
  4. \(4\)
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  1. Increases
  2. Decreases
  3. Remains constant
  4. First increases, then decreases
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  1. Increases
  2. Decreases
  3. Remains constant
  4. Remains positive
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  1. The initial charge is 15, because \(y=15\) when \(x=0\).
  2. The initial charge is 4, because 4 is the coefficient of \(x\).
  3. The initial charge is 19, because \(4+15=19\).
  4. The initial charge is \((4,15)\), because both numbers occur in the equation.
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  1. (10,0)
  2. (0,10)
  3. (0,-7)
  4. (-7,10)
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  1. 8
  2. 17
  3. 9
  4. 1
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  1. Increases by (8)
  2. Increases by (21)
  3. Decreases by (21)
  4. Decreases by (8)
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  1. 10
  2. 13
  3. -13
  4. -10

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