Select the correct answer.
Which relation does not represent a function?

A. {(3, 0), (0, 3)}
B. {(6, -2), (5, -2)}
C. {(3, 4), (3, 5)}
D. {(5, 5), (-5, -5)}
E. {(1, -2), (-2, 1)}

Mr switzer needs to buy new 1-foot tiles to cover his bathroom floor. the floor is 12 feet long and 8 feet wide. each square foot of tile will cost $1.79. in dollars what will be the total cost of the tiles he needs to buy.

X+ y = 5 ; x - y =3 solve using linear combination

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?