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## Approximating Zeroes of Quadratic Functions with Graphs

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### Lesson Focus

#### Approximating Zeroes of Quadratic Functions with Graphs

Algebra-1

You get to approximate the zeroes of quadratic functions by visually inspecting their graphs, and by using graphing technology.

### Now You Know

After completing this tutorial, you will be able to complete the following:

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• Explain the correspondence between the x-intercepts of a graph, zeroes of the related function, and solutions to the related equation.
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• Approximate the zeroes of a quadratic function by visually inspecting the graph.
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• Approximate the zeroes of a quadratic function by using graphing technology.
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### Tutorial Details

 Approximate Time 20 Minutes Pre-requisite Concepts Students should understand the concepts of quadratic equation and quadratic function and know the definition of x-intercept. Course Algebra-1 Type of Tutorial Skills Application Key Vocabulary approximate zeroes, functions, graphing technology