Question

Two systems of equations are shown:

4x+y=−1

x+y=2

and

8x+2y=−2

−4x+cy=−8

What would the value of c need to be to get the same solution for both systems?

(1 point)
Responses

4
4

1
1

-2
-2

2
2

-4

Answer 1

Your solution does not work.
The solution to
4x+y=−1
x+y=2
is (-1,3)

Note that this is also the solution to
8x+2y=−2
So now all we need is to find c such that
−4(-1)+3c=−8
c = -16/3
Not one of the choices. I suspect a typo.