1) Melissa will participate in a charity walkathon. Her mother will donate $10 for Melissa's

participation plus an additional for each mile that Melissa walks.

a) If Melissa walks miles, what will be the amount of her mother's donation?

b) Write an equation for, the amount in dollars, of Melissa's mother's donation as a function of

the number of miles Melissa walks.

c) If the donation is , how many miles did Melissa walk?

d) Melissa wants her mother to donate no more than . What is the greatest number of miles she

can walk?

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)