Question

Solve the system of equations.

2x - 2y = 6
3x + 2y = 9
A.x=0,y=3
B.x=3,y=0
C.x=1,y=-2
D.x=-2,y=-1

Answer 1

2x-2y=6
3x+2y=9
You can eliminate -2y and 2y because they add to 0.
2x=6
3x=9
Combine:
5x=15
x=3
Plug x into either of the equations to solve for y.
3(3)+2y=9
9+2y=9
2y=0
y=0
Answer is B.