If x = -1, y = 2 is a solution of the equation 3x + 4y = k, find the v – InterviewSolution

1.

If x = -1, y = 2 is a solution of the equation 3x + 4y = k, find the value of k.

Answer»

Given, 3 x + 4 y = k

(-1, 2) is the solution of 3x + 4y = k, so it satisfy the equation.

Substituting x = -1 and y = 2 in 3x + 4y = k, we get

3 (– 1 ) + 4( 2 ) = k

– 3 + 8 = k

k = 5

The value of k is 5.

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