Q. 82 - Precalculus Enhanced with Graphing Utilities

Question

Graph each equation by hand by plotting points. Verify your results using a graphing utility. 

$y=x^2-9$

Step-by-Step Solution

Answer

The required graph is 

Step 1. Given information.

Graph each equation by hand by plotting points. Verify your results using a graphing utility. 

$y=x^2-9$

Step 2. Create table of values.

Start by creating a table of values, we will then use it to plot the points on the graph. select values of x and use the given equation to find the corresponding values of y. 

Step 3. Create the graph.

Plot the points from the table above and connect them with a smooth curve. 

Step 4. Conclusion.

The required graph is