Question

The graph of y = 2x and the graph of y = 2-x are symmetrical. What is the line of symmetry?

Answer 1

2-1=1
1/2=1/2
2x=2-x
x=2/3
y=4/3
now u have the point and slope .

Answer 2

there should be two lines of symmetry huh? and they're perpendicular to each other?

Answer 3

yes and the other line slope is equal -1/(1/2))=-2
and the point didn't change