Question

The advertising sticker on Allen's

new car says it gets 36 miles per
gallon on the highway. The graph
represents the actual relationship
between the number of miles Allen
drove on the highway and the
gallons of gasoline his new car used.
How does the advertised gas
consumption rate compare to the
actual rate?

Answer 1

Explanation:

The rate in this case is slope of the line. The formula of a slope is m =
`(y_(2) -y_(1) )/(x_(2) -x_(1) )`

(10, 325)

(4, 130)

m =
`(325-130)/(10-4)` =
`(195)/(6)` = 32.5 miles per gallon

The actual rate is less (better) than advertising.