A. No x value can have multiple different outputs.
D. The change in y between x values is 4 but the function when x is 0 is -2
I is the answer to this equation I think
The angles are equal (alternate angles in parallel lines)
X + 86 = 80
X = 80 - 86 = -6
5' per side or whatever units it's measured in, because 4x5=20