Slope & Equation of a Line

 $\frac{rise}{run}$  

 $\frac{change\ in\ y}{change\ in\ x}$  

 $\frac{\Delta y}{\Delta x}$  

 $\frac{vertical\ change}{horizontal\ change}$  

 $\frac{\Delta x}{\Delta y}$  

A

B

C

D

$m=\frac{1}{4}$

$m=4$

$m=-4$

$m=-\frac{1}{4}$

$m=-16$

$m=16$

$m=\frac{1}{16}$

$m=-\frac{1}{16}$

Positive

Negative

Zero

Undefined

$m=undefined$

$b=7$

$m=7$

$b=0$

$m=0$

A

B

C

D

Undefined

$0$

$\frac{1}{65}$

$65$

$m=\ -4$

$m=3$

$m=-3$

$m=-\frac{1}{4}$

(4,0), (-2, 10)

(4,2), (10,4)

(-4,-10), (0,-2)

(10,-2), (0,4)