Finding X and Y Intercepts Using a Graphing Calculator

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<h3>Finding X and Y Intercepts Using a Graphing Calculator</h3>

Using a graphing calculator is a fast and effective way to identify the X and Y intercepts of a function. Using the built-in tools allows you to find the intercepts without doing the algebra.

Step 1

Enter the equation. Press the “Y=” button on the calculator. Clear out any existing equations. Enter the equation paying careful attention to include all parentheses and operators.

Step 2

Graph the equation. Press the “Zoom” button. Select a zoom that will work for your equation. It will need to include the X and Y intercepts.



Step 3

Find the Y intercept. Press the “Trace” button. Press the “0” button. This will move the cursor to the Y intercept where X = 0. Look at the bottom of your screen; the Y-intercept will be displayed there.

Step 4

Find the X intercept(s). Press the “2nd” key then the “Calc” key. This accesses the trace menu. Scroll down to “Zero” and press “Enter.” Using the arrow keys, scroll to the left of the X intercept and press “Enter.” Scroll to the right of the intercept and press “Enter'” twice. The X intercept will be displayed the bottom of your screen. Some equations have more than one X intercept; perform these steps for each one.

Dave Pennells

By Dave Pennells

Dave Pennells, MS, has contributed his expertise as a career consultant and training specialist across various fields for over 15 years. At City University of Seattle, he offers personal career counseling and conducts workshops focused on practical job search techniques, resume creation, and interview skills. With a Master of Science in Counseling, Pennells specializes in career consulting, conducting career assessments, guiding career transitions, and providing outplacement services. Her professional experience spans multiple sectors, including banking, retail, airlines, non-profit organizations, and the aerospace industry. Additionally, since 2001, he has been actively involved with the Career Development Association of Australia.