The city library is having a book sale to make room for the new books it purchased. The graph shows the cost, y, in dollars, to purchase x books at the sale.
Select the correct answer from each drop-down menu.

The (cost of the books)(number of books purchased) depends on the (cost of the books)(number of books purchased).
At the sale, each book costs $(0.25)(0.50)(0.75)(1.00).

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)

3

step-by-step explanation:

divide 13.5 by 9 to get the scale factor. it equals 1.5

2 * 1.5 = 3

multiply then divide

step-by-step explanation: