Question

A store sells books for $12 each. In the proportional relationship between x, the number of books purchased, and y, the cost per books in dollars" to "y, the total cost of the books in dollars, the constant of proportionality is 12. Which equation shows the relationship between x and y?

Answer 1

1•12=total cost of books. X=1 Y=12

Answer 2

Y=12x

If Y represents the Cost and X represents the number of books purchased.

WORD FORM:

Cost equals 12 times as many books that are purchased.