Tara runs an amusement park ride and needs to count the people who get on the ride. At the beginning of her shift, 132 people had ridden the ride. The table shows the total number of riders for several times during Tara's shift.
Hours into Tara's shift
0 1 2 3
Total number of riders
132 165 198 231
What is the equation in slope-intercept form that represents the total number of riders over time?