Question

Graph the line that passes through the points (9,4) and (9,1) and determine the equation of the line.

Answer 1

Both points of the given points have the same x-coordinate. This is only possible if we have a vertical line. The vertical line have the format

`x=k`

Where k represents the x-coordinate of all points of the line. The x-coordinate of our points is 9, therefore, the equation of the line is

`x=9`

And its graph is