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ZingPath: Linear Relationships and Real World Modeling

The x-Intercept of a Line with Tables, Graphs, and Equations

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Linear Relationships and Real World Modeling

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Lesson Focus

The x-Intercept of a Line with Tables, Graphs, and Equations

Algebra Foundations

Learning Made Easy

By using the measurements of the speed of a ball thrown verticall, you will learn how to find the x-intercept of a function by using data tables, graphs, and algebraic expressions.

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Now You Know

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

  • Identify independent and dependent variables of time and speed.
  • Use data tables to find the x-intercept.
  • Use graphs to find the x-intercept.
  • Use an algebraic expression to solve for the x-intercept.
  • Represent a linear function with an algebraic expression.

Everything You'll Have Covered

What is the x-intercept of a graph of a function?

~ The x-intercept of a graph of a function is a point at which the graph crosses the x-axis (horizontal axis).

Use your data table from problem 2 to plot points on the graph of the linear function . Then sketch the graph of this function.

~ We plot the points from the table above and then connect them with a straight line since we know that the function is linear.

Tutorial Details

Approximate Time 2 Minutes
Pre-requisite Concepts Students should be familiar with graphs of functions, creating a table of values for functions, and inverse operations.
Course Algebra Foundations
Type of Tutorial Animation
Key Vocabulary algebraic expression, data table, dependent variable