Refer to the given table of car measurements. Are the x values matched with the corresponding y values, as in Table 1-1 on page 5? That is, is each x value somehow associated with the corresponding y value in some meaningful way? If the x and y values are matched, does it make sense to use the difference between each x value and the y value that is in the same column? Why or why not?

The x-values are weights (in pounds) of cars; the y-values are the corresponding highway fuel consumption amounts (in mi/gal).

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Car Weights and Highway Fuel Consumption Amounts Weight (lb) Highway Fuel Consumption (mi/gal) 4035 26 3315 3565 29 4115 3650 31 29 30