Question

Tao uses elimination to solve the following system of linear equations.

-2x+4y=16
2x+2y=8
Which ordered pair is a solution to the system?
A. (0, 4)
B. (0, 8)
C. (4, 0)
D. (8, 0)

Answer 1

a

Explanation:

got it right on edge

Answer 2

(2x+2y=8)+(-2x+4y=16)

2x-2x+2y+4y=8+16

6y=24

y=4, making 2x+2y=8 become:

2x+2(4)=8

2x+8=8

2x=0

x=0

So the solution to the system of equations is the point (0, 4)