Answer:
Step-by-step explanation:
2x=y-10
2x+7=2y
====
2x=y-10
x = (y-10)/2
Use this in the 2nd equation:
2x+7=2y
2((y-10)/2)+7=2y
y - 10 + 7 = 2y
-y -3 = 0
-y = 3
y = -3
Use this in either equation:
2x=y-10
2x=(-3)-10
x = -(13/2) or - 6.5
(-6.5, -3)
See attached graph.
