Evaluating Functions
The Function r(x)\displaystyle {r}{\left({x}\right)} is represented below as a graph. Use r(x)\displaystyle {r}{\left({x}\right)} to answer the following questions
 r(−2)=\displaystyle {r}{\left(-{2}\right)}=
 r(x)=2\displaystyle {r}{\left({x}\right)}={2}, x=\displaystyle {x}=
r(−1)=\displaystyle {r}{\left(-{1}\right)}= 

Write the explicit rule for r(x)\displaystyle {r}{\left({x}\right)}:

 

 

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