Question

If the point (2, -1) lies on the graph of the equation 2x + ky = 4,
then find the value of k.

Answer 1

Step-by-step explanation:

GIVEN :

=> point (2, -1) lies on the graph of the equation

2x + ky = 4

From the given equation

2x + ky = 4

Put x = 2 and y = -1 in the given equation , we get ,

2x + ky = 4

=> 2(2) + k(-1) = 4

=> -k = 4 - 4

=> k = 0

Hence ,

The value of k is 0 .