Gas Mileage The table shows the number of miles y traveled by a car on x gallons of gasoline.
x | 2 | 4 | 8 | 10 |
y | 40 | 79 | 161 | 200 |
(a) Plot the data in the xy-plane. Be sure to label each axis.
(b) Sketch a line that models these data. (You may want to use a ruler.)
(c) Calculate the slope of the line. Interpret the slope of this line.
(d) Find the equation of the line. Is your line an exact model?
(e) How far could this car travel on 9 gallons of gasoline?
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