Which graph represents the equation x equals 4?

Answer 1

Every point on the line x=4 will have to have an x value of 4. When plotting a graph of x=4, you will find that it turns out to be a vertical line, parallel to the y axis. This is because you can choose whatever y coordinate you want, but as long as the x coordinate is 4, it will be on the line x=4.

The x intercept will, therefore, be 4. There is no y intercept as it never crosses the y axis.