Mathematics

Pair of Linear Equations in Two Variables

Graphical and algebraic methods of solving a pair of linear equations.

Sample Practice Questions

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Medium

The pair of equations x + 2y = 5 and 3x + 6y = 15 has:

AA unique solution

BExactly two solutions

CInfinitely many solutions

DNo solution

Hard

The value of k for which the system 2x + 3y = 7 and (k − 1)x + (k + 2)y = 3k has infinitely many solutions:

C−1

Easy

If x = 2, y = 1 is a solution of 2x + 3y = k, the value of k is:

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