## Video Lessons

## Ratios and Proportions

Watch the following videos and then complete worksheet #7.

- What's a ratio? - Virtual Nerd
- What's a proportion? Virtual Nerd
- how do you find equivalent ratios? Virtual Nerd (optional)
- how do you solve a proportion using cross products? Virtual Nerd
- Find an Unknown in a Proportion - Khan Academy

__Slope of a line__

Click on the link below to go to the Video Lessons and questions form.

__Here are the videos from the Lesson in case you wish to view them again.__

- Slope Dude - (3 min) Slope Dude helps us to understand positive, negative, zero, and undefined slopes.
- Slope = Rise over Run -(3 min) Examples of positive, negative, zero, and undefined slopes.
- Slope formula - (6 min.) Use the slope formula to determine the slope of a line given two points on the line.
- Slope formula example (no graph) (1 min.) Use just the formula to determine slope between two points.