Question

Solve the following system of equations.

8x + 4y = -88
4x + y = -24
A. x = -1, y = -20
B. x = -20, y = -1
C. x = 5, y = -32
D. x = 12, y = -72

Answer 1

Multiply the second equation by -4.
It will be -16x - 4y = 96

Answer 2

Combine the equations and you will get
-8x = 8
x = -1
so ur answer is A.

Answer 3

You can check by plugging in the y-value and see if it works

Answer 4

Do you know how to use Gauss-Jordan elimination?