Question

find the value of k such thatx=2 y=2and y=1is a solution of the linear equation2x-ky+7=8​

Answer 1

Answer:

Step-by-step explanation:

2*2 - 2k +7 = 8

-2k = 8-11

K = 3/2

But when y = 1

then K = 3

Answer 2

Answer:

Step-by-step explanation:

2*2-2k+7=8

4 - 2k = 8-7

4 - 2k =1

-2k = 1-4

-2k=-3

k = 3/2 = 1.5

or if y = 1 then,

     2*2-k + 7 =8

4-k=8-7

4-k =1

k = 4