Solve a Quadratic Equation by Graphing Guidance for Casio ClassPad

Solve by graphing: $x^{2} - 2 x - 15 = 0$

Step 1

Click anywhere in ClassPad to bring up the ClassPad menu. Then, select the graphing tool.

Select the Graph Function tool at the bottom of the graphing window.

Enter the equation, replacing the $0$ with a $y$ . Where $y = 0$ , the $x$ -values that make the equation true also happen to be the $x$ -intercepts.