Question

Solve the system.

2y = 4x + 2
2y = -x + 7

Answer 1

subtract eq1 with eq2
4x+2-2y
- -x+7-2y
--------
3x-5=0

3x=5
x=5/3

plug into eq1
2y=4(5/3)+2
y=(4(5/3))/2+1
y=4.333

Answer 2

oh forgot to mention, using matrices, sorry.

Answer 3

Well... that certainly changes things....
2y = 4x + 2
2y = -x + 7

Matrix A
2
2

Matrix B
4 2
-1 7

Inverse of A = 2 2
multiply A with B

result:
x=6
y=18

(This may be wrong idk)

Answer 4

yea, i'm pretty sure it's wrong.