Find y-values.

Question

Graph the equation. y=-3|x|. Let x=-3,-2,-1,0,1,2 and 3. Find the following y-values.

Answer 1

Hi Madeline,

 

You might want to start using the Desmos online graphing calculator to help answer questions like this.

 

Here is a graph containing the parent function (y=|x|), a vertical stretch for the parent (y=3|x|), and the function for this question.

 

https://www.desmos.com/calculator/6mwiqvnspm

 

You will see that y =-3|x| is reflects the 3|x| function over the x-axis.

 

To find h(-3) you are evaluating -3|-3| = -3 (3) = -9. And so on for the other x values.