Which set of ordered pairs (x, y) could represent a linear function? A = {(-2,-4), (0, -2), (2,0), (4,3)}
B = {(-6,5), (-4,2), (-1, -1), (2, -4)}
C = {(0,9), (1,7), (2,5), (3, 2)}
D = {(-3,-1), (1,1), (5,3), (9,5)}

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers