Slope-Reviewing the Basics

How long the line is

How steep the line is

How you go skiing

How you climb a mountain

Rise over run

Run over Rise

Add your x and y together

Take a good guess

$$\frac{\text{y2-y1}}{\text{x2-x1}}$$  

$$\frac{\text{y2-x1}}{\text{y2-x1}}$$  

$$\frac{\text{x2-x1}}{\text{y2-y1}}$$  

y=mx+b

Positive

Negative

Undefined

Zero

$$\frac{5}{3}$$  

$$-\frac{5}{3}$$  

$$\frac{3}{5}$$  

$$-\frac{3}{5}$$  

$$\frac{4}{3}$$  

$$-\frac{4}{3}$$  

$$\frac{3}{4}$$  

$$-\frac{3}{4}$$  

$$\frac{2}{5}$$  

$$-\frac{5}{2}$$  

$$-\frac{1}{2}$$  

$$\frac{5}{2}$$  

$$\frac{1}{2}$$  

$$-\frac{1}{2}$$  

2

-1

2

-2

1/2

-1/2

Rise over run

$$\frac{y2-y1}{x2-x1}$$  

y=mx+b