Graphing Calculator for Quadratic Functions

This video tutorial demonstrates how to use a graphing calculator to find the vertex, y-intercept, and x-intercepts of a quadratic function. It covers entering the function, adjusting the graph window, and using calculator features to identify key points on the graph. The tutorial also explains how to convert decimal coordinates to fractions and reviews the graph's characteristics.

What is the primary purpose of using a graphing calculator in this example?

• To solve linear equations

• To find the vertex, y-intercept, and x-intercepts of a quadratic function

• To perform matrix operations

• To calculate the area under a curve

What is the first step in using the graphing calculator for this quadratic function?

• Adjusting the window settings

• Entering the quadratic function into the calculator

• Calculating the derivative

• Finding the x-intercepts

Which key do you press to start entering a new function in the calculator?

• WINDOW

• Y EQUALS

• GRAPH

• TRACE

How do you find the vertex of a parabola that opens upwards using the calculator?

• Select option four for maximum

• Use the zero feature

• Select option three for minimum

• Press the GRAPH key

What are the coordinates of the vertex in fraction form?

• (3/2, -17/2)

• (5/2, -25/2)

• (9/2, -45/2)

• (7/2, -35/2)

How can you find the y-intercept of the quadratic function using the calculator?

• By finding the maximum value

• By setting x to zero and evaluating the function

• By using the zero feature

• By adjusting the window settings

What is the y-intercept of the quadratic function?

• (7, 0)

• (-7, 0)

• (0, 7)

• (0, -7)

What feature is used to find the x-intercepts of the quadratic function?

• Minimum feature

• Zero feature

• Trace feature

• Maximum feature

What is the approximate x-coordinate of the first x-intercept?

• 0.54

• 1.54

• 2.54

• 3.54

What is the approximate x-coordinate of the second x-intercept?

• 6.46

• 8.46

• 5.46

• 7.46