Which set of ordered pairs represent a linear function? {(3, 4), (5,-2), (6,-5), (9, -7)}
{(-2, 8), (1,5), (4,2), (7, -1)}
{(1, 2), (3, 3), (4,4), (7, 6)}
{(-4,4), (2, 3), (4, 2), (5, 1)}

Astudent received the following grades last semester. find the student's semester grade point average. an a is algebra (3 credits), a b in history ( 3 credits), a in sociology ( 3 credits) a d in english ( 3credits) and a c in seminar ( 2credits). an a is worth 4 points, a b is worth 3 points a c is worth 2 points and a d is worth 1 point.

Acoin bank containing only dimes and quarters has 12 more dimes than quarters. the total value of the coins is $11. how many quarters and dimes are in the coin bank?

Two numbers have a sum of -19. one number is x. what expression represents the other number?