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Please at least answer first one!!!!

Guide :High School

Please at least answer first one!!!!

Please at least answer first one!!!! 1. What linear function can be represented by the set of ordered pairs? {(−4, 15), (0, 5), (4, −5), (8, −15)} Enter your answer in the box. f(x)=_________ 2.
For the first one, first find your slope (), then use f(x)=mx+b. Your slope would be . Your y-intercept is given as (0,5), so your equation of the line would be f(x)=(-5/2)x+5. For the second one, first you find what is constant. As your 3500 is a one time purchase, it is your constant, which will be your y-intercept. Your slope would be whatever changes over time, which is your maintenance cost of 125. This creates the equation f(x)=mx+b => f(x)=125x+3500. ...

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