Question

using the point (3,15) what is the equation for the vertical line? what is the equation for the horizontal line?

Answer 1

We are given the following point: (3,15)

A vertical line is a line of the form:

$x=k$

The value of "k" is the x-coordinate of the given point, that is:

$x=3$

A horizontal line is a line of the form:

$y=k$

Where "k" is the y-coordinate of the given point, that is:

$y=15$