f(-2)=-4 and f(5)=1. Find (f)x I feel I'm thinking way to hard about this one!
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f is a linear function? If it is so than $\displaystyle f(x)=ax+b$. Then, $\displaystyle f(-2)=-4\Rightarrow -2a+b=-4$ $\displaystyle f(5)=1\Rightarrow 5a+b=1$ Now you have to solve the system to find a and b.
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