# Stumped!

• Aug 14th 2009, 02:42 PM
epetrik
Stumped!
Teds Car Rental charges a fixed charge and so much per mile. Tara rented a car from Teds. She drove 150 miles and paid 65 dollars. Susan rented a car from Teds and drove 350 miles and paid 125 dollars. Determine a linear function that Teds uses for its charges.
• Aug 14th 2009, 03:55 PM
skeeter
Quote:

Originally Posted by epetrik
Teds Car Rental charges a fixed charge and so much per mile. Tara rented a car from Teds. She drove 150 miles and paid 65 dollars. Susan rented a car from Teds and drove 350 miles and paid 125 dollars. Determine a linear function that Teds uses for its charges.

two points ...

(150, 65)

(350, 125)

point-slope form ...

$y - y_1 = m(x - x_1)$