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# ZingPath: Writing and Graphing Linear Equations

## Slope of a Line                   Searching for

## Writing and Graphing Linear Equations

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### Lesson Focus

#### Slope of a Line

Algebra Foundations

### Learning Made Easy

You will sink the enemy ships in the coordinate plane by using the slope of the line.

### Now You Know

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

• Calculate the slope of a line.
• Locate points on a line given the slope.

### Everything You'll Have Covered

This Activity Object provides practice calculating the slope of a line found on a coordinate plane.

In order to find the slope of a line, it is helpful to first find the vertical change in y (sometimes called the "rise") and the horizontal change in x (sometimes called the "run").

For example, Note: This line has a positive slope - it slants upward from left to right.

Locate two points on a given line: (0, 1) and (3, 4).

Find the vertical and horizontal change: The following key vocabulary terms will be used throughout this Activity Object:

�������� coordinate plane - a plane formed by the intersection of a horizontal number line (the x-axis) and a vertical number line (the y-axis) at their zero points (the origin) �������� line - a straight path that is endless in both directions �������� slope - the measure of steepness of a line A slope can be:

o�� positive - slanting upward, from left to right

o�� negative - slanting downward, from left to right

o�� zero - if the line is a horizontal line

o�� undefined - if the line is vertical, it has no slope

### Tutorial Details

 Approximate Time 20 Minutes Pre-requisite Concepts Students should be familiar with calculating slope, coordinate planes, and locating points on coordinate plane. Course Algebra Foundations Type of Tutorial Skills Application Key Vocabulary coordinate plane, line, slope