Finding Slope

Finding Slope

Today we'll be exploring how to find the slope of the line.

Learning target:

I can find the slope of a line on a grid.

There are multiple ways to find the slope of the line.

One way to find slope is by diving the vertical side by the horizontal side of slope triangles.

In this case

You can see that vertical length of the yellow triangle is 3 and the horizontal length is 4. To find the slope, you can divide 3 by 4 (which equals .75). Or you can write the slope as 3/4.

Another way to find slope is counting the rise over run.

Meaning, you can pick a plotted point and count how many squares it goes up and then how many it goes over until it hits the next point.

Watch the intro video on finding slope. Copy and paste the URL into a new tab. Be prepared to answer questions based on the video.

• https://www.youtube.com/watch?v=zihsQC0IUd8

Multiple Choice

What is the slope of the line?

• -2/3

• 3/2

• 2/3

• -3/2

Multiple Choice

What is the slope of the line?

• 2/3

• -2/3

• 3/2

• -3/2

Sometimes slopes will be undefined or have a slope of zero.

When a slope is in a completely straight horizontal line, then the slope is considered zero.

When a slope is in a completely straight vertical line, then the slope is considered undefined.

The slope of this line is zero

The slope of this line is undefined

Remember, a slope is positive when the staircase is going up.

The image to your right shows a positive slope.

Remember, a slope is negative when the staircase is upside down.

The image to your right shows a negative slope.

Don't forget that your slopes should be simplified.

If you have a slope of 10/5, it can be simplified to 2/1

Multiple Choice

What is the slope of the line?

• Undefined

• -1

• Zero

• 1

Fill in the Blanks

Multiple Select

What is the slope of the line?

*Select all answers that apply

• -1/3

• -3

• 1/3

• 3

Multiple Choice

What is the slope of the line?

• -1/2

• 1

• -1

• -2

Multiple Choice

What is the slope of the line?

• 3/2

• 2/3

• -3/2

• -2/3

Multiple Choice

What is the slope of the line?

• Zero

• Undefined

• -1

• 1

Fill in the Blanks