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### Slope!!!

With “Real-Life” Examples

Slope of a Line

- The slope of a line is defined as the rate of change of a function or graph. It can also be thought of as the steepness of a line.

- Before we learn how to calculate and graph slope, we need to understand the different types of slopes and how they behave.

Positive Slope

- A line that is increasing as you move to the RIGHT, has a positive slope.
- It can be any value as long as it is greater than 0.
- The larger the number, the steeper the line.

Negative Slope

- A line that is decreasing as you move to the RIGHT, has a negative slope.
- It can be any value as long as it is less than 0.
- The larger (more negative) the number, the steeper the line.

No Slope or Horizontal Slope

- A line that has no slope is a horizontal line.
- Its slope is equal to 0.
- Can you think of other examples of things with no slope?

Undefined or Vertical Slope

- A vertical line has what is called an undefined slope.
- Can you think of other examples of things with an undefined slope?

What Type of Slope Is This?

- Is this a positive or negative slope? How can you tell?
- What makes this different than the other positive slope we saw?

What Type of Slope Is This?

- Is this a positive or negative slope? How can you tell?
- What makes this different than the other negative slope we saw?

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