Graphing Quadratic Functions with a TI-89 Calculator

This tutorial guides users on how to graph a quadratic function using the TI-89 calculator. It covers entering the function, adjusting the graph window, finding the vertex, using the table feature for additional points, and calculating x-intercepts. The tutorial provides step-by-step instructions to ensure a clear understanding of each process.

What is the first step in graphing a quadratic function on the TI-89 calculator?

• Adjust the window settings

• Use the table feature

• Enter the function into the calculator

• Find the vertex

Which menu option is used to set the graph to the standard window on the TI-89?

• Zoom Out

• Zoom Fit

• Zoom Standard

• Zoom In

To better view the parabola, which axis limits should be adjusted manually?

• Only the X-axis

• Both X and Y axes

• Neither axis

• Only the Y-axis

What is the significance of the vertex in a parabola?

• It is the point where the graph crosses the y-axis

• It is the lowest point

• It is the highest point

• It is the point where the graph crosses the x-axis

Which function on the calculator helps in finding the vertex of a parabola?

• Zoom

• Table

• Graph

• Math

What does setting the table to 'automatic' do?

• Saves the table data

• Allows manual entry of x-values

• Automatically populates the table with points

• Clears the table

How can you manually enter x-values in the table feature?

• Set the table to 'ask'

• Use the zoom function

• Set the table to 'automatic'

• Use the graph function

What is the purpose of finding the x-intercepts of a parabola?

• To find the highest point

• To determine where the graph crosses the y-axis

• To find the lowest point

• To determine where the graph crosses the x-axis

Which calculator function is used to find the x-intercepts?

• Graph

• Zero

• Table

• Zoom

What key concept is summarized at the end of the tutorial?

• Using the table feature

• Graphing the parabola and finding key points

• Finding the vertex

• Adjusting the window