



 
Hi Hannah, I am going to write \[y(x) = \frac14 x  1\] to stand for the expression $y = \large \frac14 \normalsize x  1$ evaluated at $x,$ for example $y(3)$ is the value of $y$ when $x = 3.$ thus \[y(3) = \frac14 \times 3 1 = \frac34  1 =  \frac{1}{4}.\] In the problem you have the function $y$ has a domain consisting of five points 4, 2, 0, 2, and 4. That is the domain of $y$ is {4, 2, 0, 2, 4}. The range of the function is then {y(4), y(2), y(0), y(2), y(4)}. I think this is what you are expected to find, the range of the function $y$. I hope this helps. Write back if you need more assistance,  


Math Central is supported by the University of Regina and the Imperial Oil Foundation. 