Question

What two points satisfy y=-x^2+2x+4 and x+y=4

Answer 1

The answer is (0, 4) and (3, 1).

Explanation:

I took the test and got it right.

Answer 2

Hello,

x+y=4==>y=4-x
y=-x²+2x+4==>4-x=-x²+2x+4==>x²-3x=0==>x(x-3)=0
==>(x=0 and y= 4-0=4 ) or (x=3 and y=4-3=1)
(0:4) and (3;1) are the 2 points.