Devin's Makeup #4

To sketch polynomids function do the following
-factor completely
-set up a # line
-plug in either sid of your roots
-+ve above x-axis
--ve below x-axis
-check in calc
-max and min in calc. only

Quadratic max and min
-x=-b/2a te vertex is always your min and max

Inequalities
-chang sign when you multiply or divide by a negative
-if (x+4)(x-1)>0
then break it ip and solve
(x+4)>0
x>-4
(x-1)>0
x>1

Ex. 3x-9>4
3x<5
x<5/3

3x>3
x>1