Question

Solve the following system of equations using matrices.
x = -2y + 6
2x + 2y = 16

A. (2,2)
B. (10,-2)
C. (-2,10)
D. (-2,2)

Answer 1

Heve you learned Cramer's method?

Answer 2

First break the equations down into a general form:
x+2y=6
2x+2y=16

Now make your linear equations in this form:

(x,y | answer)

Answer 3

(10,-2) ?

Answer 4

that's what i got

Answer 5

Nice :) As long as you solved the matrices like the question asks:
(1,2 | 6)
(2,2 | 16)