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If (a_1/a_2 \ne b_1/b_2), what will be the position of the lines?

Answer and explanation

Correct answer: Intersecting

The direct answer is option C: intersecting lines. For a pair \(a_1x+b_1y+c_1=0\) and \(a_2x+b_2y+c_2=0\), if \(\frac{a_1}{a_2}\ne\frac{b_1}{b_2}\), the coefficients are not proportional in the same way. In slope form, this means the two lines have different slopes. Lines with different slopes meet at exactly one point, so the pair has one unique solution. Option A, parallel, is wrong because parallel lines have equal slopes and usually \(\frac{a_1}{a_2}=\frac{b_1}{b_2}\ne\frac{c_1}{c_2}\). Option B, coincident, is wrong because coincident lines have all three corresponding ratios equal. Option C is correct: unequal coefficient ratios indicate a unique intersection. Option D, inconsistent, describes the equation system's lack of a solution, which occurs for distinct parallel lines, not for intersecting lines. Memory cue: different slopes mean one meeting point and one solution.

Related tags

Linear EquationsIntersecting LinesUnique Solution

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