Question

How do you find the slope given `x=7`?

Answer 1

undefined.

Explanation:

slope of a straight line is the tangent of the angle subtended by it with the positive direction of x-axis. Here the line `x=7`is parallel to y-axis , so it subtends angle `pi/2` with the x-axis . Hence slope is `tan(pi/2)` i.e. undefined.