Do the data in the table represent a direct variation or an inverse variation? Write an equation to model the data in the table.

Question

x 1 3 5 10
y 4 12 20 40
A. direct variation; y equals 4 times x
B. direct variation; y equals one-fourth x
C. inverse variation; x times y equals 4
D. inverse variation; x times y equals one fourth

Answer 1

B. direct variation; y equals one-fourth x

Answer 2

What are the excluded values of the function?

y equals 3 over the quantity 4 times x plus 64

A. x = 0
B. x equals negative 64
C. x equals negative 16
D. x equals negative 8

Answer 3

B. x equals negative 64