This is a demonstration on the effects of change on m and b. This will help students in an algebra I setting to see how a linear function can change with different values of m and b.

Describe what is happening to the line as the values of b increase? How would you describe the shift?
Describe what is happening to the line as the values of b decrease? How would you describe the shift?
Describe what is happening to the line as the values of m increase? How would you describe the shift?
Describe what is happening to the line as the values of m decrease? How would you describe the shift?