# 3 Types of Slopes of Lines Answer Key

Slope is an important concept in mathematics, especially in the study of lines. It is the measure of the steepness of a line. There are three types of slopes for lines: positive, negative, and zero. Understanding each of these slopes can help students get the answers to equations involving lines. This article will explain each type of slope and provide an answer key.

## Positive Slope A positive slope is one that goes up from left to right. In other words, the line rises as it goes from left to right. A positive slope of a line is represented by the equation y=mx + b, where m is the slope and b is the y-intercept. The m is always positive for a line with a positive slope. An example of a line with a positive slope is the equation y=2x + 1, which rises from left to right.

## Negative Slope A negative slope is one that goes down from left to right. In other words, the line decreases as it goes from left to right. A negative slope of a line is represented by the equation y=mx + b, where m is the slope and b is the y-intercept. The m is always negative for a line with a negative slope. An example of a line with a negative slope is the equation y=-2x + 1, which decreases from left to right.

## Zero Slope A zero slope is one that is horizontal and does not go up or down. In other words, the line stays the same as it goes from left to right. A zero slope of a line is represented by the equation y=mx + b, where m is the slope and b is the y-intercept. The m is always equal to zero for a line with a zero slope. An example of a line with a zero slope is the equation y=2x + 1, which does not go up or down from left to right.

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The answer key for the three types of slope of lines is as follows:
Positive Slope: y=mx + b, m is positive
Negative Slope: y=mx + b, m is negative
Zero Slope: y=mx + b, m is zero

Understanding the three types of slopes of lines is essential for students who are studying mathematics. With this knowledge, students will be able to answer equations involving lines and understand the concepts behind them. By understanding each slope, students can use the answer key to determine the correct answer to equations.