Step-by-step explanation:
for the second one slope is -1 when the y intercept is (0,10)
Answer:
x=16, y= -6
(2x+2y) - (2x+7y)=20-(-10)
2x+2y-2x-7y=30
-5y= 30
y=30/-5
y= -6
2x+2*-6=20
2x-12=20
2x=20+12
2x=32
x=32/2
x=16
