Exercise 27 Page 258

One way to graph a function rule is by making a table of values and substituting some arbitrary values for $x.$ Doing so will give the corresponding values of $y,$ which we can use to form $(x,y)$ coordinate pairs.

Let's plot these points on a coordinate plane.

By connecting all of our points, we form the graph of the function rule. Because there is a variable with an exponent in the function, our line will not be straight. Later, we will learn that this type of function is called a cubic function.