Question

Which equation is correctly represented by the following graph?

Answer 1

The equation of the vertical line is x = 4.5, the last option.

Which equation is represented by that graph?

Here we can see the graph of an vertical line. Remember that the general equation for a vertical line is:

x = a

This means, y can be any real value, and x is a constant.

Here we can see that the vertical line is between x = 4 and x = 5, so we can estimate that it is at x = 4.5, so that is the linear equation.