Which equation represents a proportional relationship?
y=x+1
o y=3x+7
o y = 72 x
o
x+y=10

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Which function has the domain x> -11?