Answer:
2 solutions (0, 4) and (4, 20)
Step-by-step explanation:
you can solve by substitution
y=4x+4 and y=x²+4 so you can say that
4x+4=x²+4
subtract (4x+4) from both sides to get an equation that equals 0
0=x²-4x (the 4 cancels itself out, 4-4)
simplify, solve for x
0=x(x-4)
set each part =0 and solve
x=0 x-4=0
so x=0 and x=4
plug each solution back into one of the equations
y=4(0)+4
y=4
(0, 4) is one solution
y=4(4)+4
y=20
(4, 20) is another solution
so you have 2 solutions, (0, 4) and (4, 20)
