SOLUTION: The coast-down time y for a car as it drops 10 mph from an initial speed x depends on several factors, such as average drag, tire pressure, and whether the transmission is in neutr

Algebra ->  Test -> SOLUTION: The coast-down time y for a car as it drops 10 mph from an initial speed x depends on several factors, such as average drag, tire pressure, and whether the transmission is in neutr      Log On


   

Question 935911: The coast-down time y for a car as it drops 10 mph from an initial speed x depends on several factors, such as average drag, tire pressure, and whether the transmission is in neutral. The table gives coast-down time in seconds for a car under standard conditions for selected speeds.
Initial speed Coast-down time Initial speeed Coast-down time
(in mph) (in seconds) (in mph) (in seconds)
30 30 50 17
35 26 55 15
40 22 60 14
45 19 65 13
Use a quadratic regression feature of a graphing calculator to find the quadratic function g that best fits the data
g(x)=__x^2-__x+__
(Round to four decimal places as needed)
Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
y = 0.0119047619xx - 1.611904762x + 67.64285714
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answer:
y = 0.0119xx - 1.6119x + 67.6429
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