Question

How do you find equation of a line, L which passes through the point (3, -1) and is vertical?

Answer 1

Equation of the vertical line L is `color(blue)(x = 3`

Explanation:

The "slope" of a vertical line. A vertical line has undefined slope because all points on the line have the same x-coordinate. As a result the formula used for slope has a denominator of 0, which makes the slope undefined.

Point `(x_1, y_1) = (3,-1)`

Equation of the vertical line L is `color(blue)(x = 3`