SOLUTION: Find a formula for the linear function given below. The function f has f(9)=-39 and f(16)=-81 f(x)= i have no clue how to find a formula for the function, if you can help

Question 317642: Find a formula for the linear function given below.
The function f has f(9)=-39 and f(16)=-81
f(x)=
i have no clue how to find a formula for the function, if you can help me that would be great!
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Linear functions have the form,
Calculate the slope, ,using the two points, (,) and (,)

Then use either point to find .

.
.
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