In this case, since one equation is in the form of x=, substitution would be best for this problem. Simply plug in 4y + 8 in place of x in the second equation, solve for y, then plug that value into the first equation to find x.
F(x) = 4(5) - 2 → f(x) = 20 - 2 → f(x) = 18
Answer:
3=20
4=15
5=12
Step-by-step explanation:
You know b=0 because it is passing through the orgin (0,0) and b is the y intercept. You input (-3,6) as (x,y)