Student found the slope of a line that passes through the points (1, 14)and (3, 4) to be 5. what mistake did she make?

Ineed with number 17 i don’t get it at alll

Ataxi company charges $2.25 for the first mile and then $0.20 per mile for each additional mile, or f = $2.25 + $0.20(m - 1) where f is the fare and m is the number of miles. if juan's taxi fare was $6.05, how many miles did he travel in the taxi? if juan's taxi fare was 7.65, how many miles did he travel in taxi

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9