Asked by ella

please help!
x y
1 135
2 220
3 305
what is the expression/equation that could be used to find y?
Answered by Steve
note that y grows by 85 when x grows by 1.

So, first guess: y = 85x

But 85*1 = 85, and y(1) = 135.

So, now how can you accommodate that fact?
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