algebra 15-1 practice

Question

Identify the solution to the system of linear equations  y=-2 2y=-x-1

A (-3,2)

B (3,2)

C (-3,-2)

D (3,-2)

Answer 1

D (3,-2)

the solution has to have the y coordinate as -2, that eliminates A and B, leaving only C or D

plug -2 into the 2nd equation to get 2(-2) =-x-1 or -4=-x-1, solve for x, add 1 to both sides: -x=-3 or x=3