Not sure how to answer this, a explanation would be appreciated!

I'm going to assume normal form is slope-intercept form by the way.

x=2;y=4. Written in a coordinate would be (2,4)

Normal forms; y=-x+6 and y= 4x-4

Explanation: it's a system of equations so if

y=-x+6 and y=4x-4 then -x+6=4x-4 (because they're both equal to y)

From there it's easy.

5x + 5

step-by-step explanation:

you should always add the diagrams and graphs we cannot see. this particular question is kind of borderline because we can make a graph for you.

(f + g)x = -x^2 +3x + 5 + x^2 + 2x

(f + g)x = 5x + 5

the graph of z = 5x + 5 is shown below. always use desmos when in doubt.