Question

8x+2y=−2
−4x+4y=−8

is the answer x = -1 and y = 3?

Answer 1

To check if the answer is correct, we can substitute the values of x and y into the original equations and see if they satisfy both equations.

For equation 1: 8x + 2y = -2
Replacing x with -1 and y with 3: 8(-1) + 2(3) = -2
-8 + 6 = -2
-2 = -2

The first equation is satisfied.

For equation 2: -4x + 4y = -8
Replacing x with -1 and y with 3: -4(-1) + 4(3) = -8
4 + 12 = -8
16 = -8

The second equation is NOT satisfied.

Therefore, the answer x = -1 and y = 3 is incorrect.