Asked by kayden
what is the rule that represents the function for (0,30), (1,25), (2,20), (3,15), (4,10)
Answers
Answered by
oobleck
note that y decreases by 5 when x increases by 1
so, start with y = -5x
But, -5*0 = 0, and you want f(0) = 30
so add 30, to get the final rule of
y = 30-5x
so, start with y = -5x
But, -5*0 = 0, and you want f(0) = 30
so add 30, to get the final rule of
y = 30-5x
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