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Evaluating linear functionsfor f(x) = 1/3x - 2, determine:a, f(9)b, f(-1)c,f(0)

User Miq
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1 Answer

2 votes

Given the function:


\text{ f(x) = }(1)/(3)\text{x - 2}

Let's evaluate,

a.) f(9) : It means that we will substitute all x in the equation by 9.

We get,


\text{ f(x) = }(1)/(3)\text{x - 2}
\text{ f(9) = }(1)/(3)(9)\text{ - 2}
\text{ = }(9)/(3)\text{ - 2}
\text{ = 3 - 2}
\text{ f(9) = 1}

Therefore, f(9) = 1.

b.) f(-1) : It means that we will substitute all x in the equation by -1.

We get,


\text{ f(x) = }(1)/(3)\text{x - 2}
\text{ f(-1) = }(1)/(3)(-1)\text{ - 2}
\text{ = -}(1)/(3)-2
\text{ = -}(1)/(3)\text{ - }(6)/(3)\text{ = }\frac{-1\text{ - 6}}{3}
\text{ f(-1) = -}(7)/(3)

User Banago
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