Question: This was a problem I worked last month but received only partial points. Any assistance on the error and how to solve is appreciated. ff(x)

This was a problem I worked last month but received only partial points. Any assistance on the error and how to solve is appreciated.

\ff(x) = -3x + 5x (a) Is the point (-1, 2) on the graph of f? (b) Ifx = -2, what is f(x )? What point is on the graph of f? (c) If f(x) = -2, what is x? What point(s) are on the graph of f? (d) What is the domain of f

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