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# ZingPath: Linear Relationships and Real World Modeling

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## Linear Relationships and Real World Modeling

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Explore the full path to learning Linear Relationships and Real World Modeling

### Lesson Focus

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

Algebra Foundations

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.

### 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