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Lesson 5

1. Lesson 5

1.4. Discover

Mathematics 20-1 Module 5

Module 5: Radicals

 

Discover

 

In this section you will explore the graph of an equation involving a radical.


Try This 1

 

This is a play button that opens Graphing Tool.

  1. Sketch using your graphing calculator or the multimedia applet Graphing Tool. hint

  2. Sketch y = x2 using your graphing calculator or Graphing Tool.

  3. What similarities and differences exist between these two graphs?

  4. Isolate x in .

  5. What do you notice about the form of the equation when x is isolated?

course folder Save your work in your course folder.

 

Share 1

 

Based on your observations from the graphing exercise above, respond to the following questions with a partner or group.

  1. Squaring a radical equation changes the equation into what kind of equation? Is a radical equation half of a parabola turned on its side?

  2. Summarize your dicussion by speculating about the relationship between radical equations and quadratic equations.

course folder Save your work in your course folder.

Graphing Tool Instructions.

 

Open Graphing Tool. Select Graphing Tool Interactive Manual. Watch and listen to Text Entry of Functions (in the menu on the left) to see an overview of how the tool functions. Download the tool that applies to your computer platform, Mac Version or PC Version.

 

After downloading, Graphing Tool will open with an image shown on your computer screen. Click on the image for instructions on how to get started. Use the Functions and Relations tab and choose Create a Text Entry Function to begin entering your equation.