MY NOTES ASK YOUR T During the testing of a new automobile braking system, the speeds x (in miles per hour) and the stopping distances y (in feet) were recorded in the table. Speed, x Stopping distance, y 57 103 187 30 40 50 (a) Use the data to create a system of linear equations. Then find the least squares regression parabola for the data by solving the system. (Round all constants and coefficients to three decimal places.) y = (b) Use a graphing utility to graph the parabola and the data in the same viewing window. y y 180 160 140 120 100 180 160 140 120 100 363 FEB 70