Question

For the graph x = -42 find the slope of a line that is perpendicular to it and the slope of a line parallel to it. Explain your answer with two or more sentences.

Answer 1

X - 42 is a straight vertical line passing through  -42 on the x-axis ( point -42,0)
so the slope is infinite .
Another line with same slope  and parallel to it would be x = 36.

A horizontal like with slope 0  is perpendicular to it  It would have equation y  any number  so y = 6 would be an example.