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Linear
Answers that could justify:
the rate of change is constant
The y values decrease by the same amount
As x values increase by 1 the y values decrease by 15
It depends on how many players are on each team if I'm thinking right. How many are there?
Replace f(x) in the equation with what it equals:

Distribute 4 to each term in parentheses:



The answer is
C.
To simplify the problem it would be: -18xy+18y^2