Question

Solve the system of equations.

x + 3y = -1
2x + 2y = 6

(-4, 1)

(2, -1)

(4, -1)

(5, -2)

Answer 1

you could check each ordered pair and see which one works

Answer 2

or start with \[x + 3y = -1 \\2x + 2y = 6 \] multiply the first equation by -2 and get
\[-2x-6y=2\\2x+2y=6\] then add them up to get
\[5y=5\] telling you \(y=1\)

Answer 3

whoa that was wrong!

Answer 4

add them up and get
\[-4y=8\] and so
\[y=-2\]

Answer 5

Thank you(:

So the answer would be D?

Answer 6

yes

Answer 7

Can you help me with one more ?