Question

What is the equation of a vertical line through the point (3, 2)?

Answer 1

X=3 is a vertical line that goes through the following point

Answer 2

If you consider what the slope looks like for a vertical line, it is an infinite slope. What that means is that you cannot have a y-value in your equation:

x = 3

This x-value would be a vertical line that passes through all y-values for x = 3. So you can replace them in (3, y) with any value, and it will be included in the linear equation x = 3.