Question 974117
a) (0, 16950), (8, 27957)
b) slope m is (27957 - 16950) / (8 - 0) = 11007 / 8 = 1375.875
use the point (8, 27957)
(y-27957) = 1375.875(x-8)
c) (y-27957) = 1375.875(x-8)
y-27957 = 1375.875x - 11007
y = 1375.875x + 16950
The slope 1375.875 means that for each year after 1990, the averge cost of a new car increases by 1375.875
d) now 2018 - 1990 = 28
y = 1375.875x + 16950
let x = 28, then
y = 1375.875(28) + 16950
y = 38524.5 + 16950
y = 55474.5
therefore the average cost of a new car in 2018 will be $55,474.50
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makes me wonder how many unsold new cars will be in 2018