Question

The value of k for which x = 1, y = -1 is a solution of kx – 2y = 0 is :

a. 12 b. -2 c. 5 d. -8​

Answer 1

Answer:

-2 is the right answer

Step-by-step explanation:

if x is 1 an y is -1 then

k×(1) - 2×(-1)=0

1k - (-2) =0

1k+2=0

1k=0-2

1k = -2

k= -2/1

k =-2

Answer 2

Step-by-step explanation:

x = 1

y = -1

m = ?

kx - 2y = 0

k*1 - 2*(-1) = 0

1k - (-2) = 0

1k + 2 = 0

1k = 0-2

1k = -2

k = - 2/1

k = -2