Make a scatter plot of the data below. Speed Stopping
(mph)
distance (ft)
10 12.5
20 36.0
30 69.5
40 1114.0
50 169.5
60 249.0
70 325.5
a.
Use the quadratic regression feature of a graphing calculator to find a quadratic model. Round to the nearest hundredths
place.
y = 0.06x² +0.31%+4
b. y = -4.03x² +0.32x + 8.19
y = 0.06x2 - 0.31% - 4
d. y = 4.03x-0.32% – 8.19
C.