The equation would be in the form. y=mx+b. In this equation, B would equal $600, because it is the y-intercept. $25 is the rate per hour, so it is M. 8 hours is X because it is the amount of hours worked. So, the equation would be. y=25x+600. If you are wanting to solve for the 8 hours, then You would do y=25(8)+600. The answer would be $800.