Question

The graph shows the cost (C) of shipping a package based on its mass in pounds (p)

Enter an equation to represent the cost (C) of shipping a package based on its mass in pounds (p).

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Answer 1

C = 4p

Explanation:

Because it starts at 0 pounds costs 0 dollars, we know it starts at the origin and has no y-intercept. Because it rises up 20 dollars for every 5 pounds, we can use rise/run to do 20/5 to get an increase of 4 dollars per pound.