How do you find the equation of the line that goes through P(3, -4), slope is undefined?

1 Answer
Aug 18, 2017

See a solution process below:

Explanation:

A line is a vertical line when the slope of the line is undefined.

This means for each and every value of y, the x value is the same.

So, given the point P(3,4) we know the x value is 3.

Therefore, we can plug any value in for y and x will always be 8.

Therefore the equation for this line is:

x=3

Regardless of the value of y, x will always be 3