Holly, maria and johnny went to a fair over spring break. holly paid $12.50 and went on one ride. maria paid $15.00 and went on two rides. johnny paid $20.00 and went on 4 rides. with x being the number of rides and y being the total amount paid, is the situation linear and why? no. between holly and maria there is an increase of $2.50 and between maria and johnny there is an increase of $5.00. yes. the y-intercept can be determined to be $10.00. yes. there is a constant rate of increase of $2.50 for each ride. no. we are not given the initial cost if they went on no rides.