# Slope and y-intercept

Move sliders * m* and

*below to investigate the graph of*

**b****y = mx + b.**

**Questions**

- How does the value of
*m*and*b*affect the graph of y = mx + b? - .Without using GeoGebra, explain and justify what should be the values of
*m*and*b*so that the graph passes through- Quadrants I, II, and III
- Quadrants I, II, and IV
- Quadrants I and III only
- Quadrants III and IV only

- Explain and justify why
*m*> 0 when the graph slants to the right.*m*< 0 when the graph slants to the left.*m*= 0 when the graph is horizontal.