A pair of linear equations in two variables has a unique solution if:

Type: MCQ • Marks: 1

A. a1/a2 = b1/b2 ≠ c1/c2

B. a1/a2 = b1/b2 = c1/c2

C. a1*a2 + b1*b2 = 0

D. a1/a2 ≠ b1/b2

Explanation

For consistent equations with a unique solution (intersecting lines), the ratio of coefficients of x and y are unequal: a1/a2 ≠ b1/b2.

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UP TGT Mathematics

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