Question

Hey guys, I really need help with algebra...

Solve the system by substitution.
x= −8y
−x+y= 18
=(_,_)

Answer 1

(-16,2)

Explanation:

x= −8y

−x+y= 18

substitute for x:

-(-8y) + y = 18

8y + y = 18

9y = 18

divide both sides by 9:

y = 2

x = -8(2) = -16