Question

solve the system by graphing
-2x=2y-4
2x-y=-5
*(-1,3)
*(3,-1)
*(-3,-1)
*(-1,-3)

Answer 1

graph them and at the point where they intersect is the answer.
to graph them, put them in y=mx+b from and plug in x values.

Answer 2

try the points, substitute x and y to see which one is true

Answer 3

i think its B, is that right?

Answer 4

lets try B (3,-1) (x,y)
-2x=2y-4 = -2(3) = 2(-1) -4
-6 = -2 - 4
-6 = -6 ok, works
2x-y=-5 = 2(3) -(-1) = -5
6 + 1 = -5
7 = -5 not good

need to keep trying

Answer 5

ok