Graphing Linear Inequalities

AIM: SWBAT graph a system of linear
inequalities on the coordinate plane

DO NOW:
Find the slope & y- intercept :

HW:
P. 434#8, 9, 10,12
Assessment Packet DUE MONDAY!!!
EXAM MONDAY!!!

10.8 GRAPHING LINEAR INEQUALITIES

Example:

You will graph these just like lines :
- Put it in STANDARD FORM
- Find the SLOPE and Y -INT.
- Use the y-int. as 1^st point and move to the next
- points using the slope

What’s different about them ?

- If inequality has < , > }
- If inequality has < , > }

- SHADING (just like regular inequalities:

A) Pick a TEST POINT on either side of
the line (0,0) is the best when available

B) Plug it into the inequality to de termine if
it is a solution or not

If yes, you shade IN THE DIRECTION
OF THE TEST POINT

If no, you shade IN THE OPPOSITE
DIRECTION OF THE TEST POINT
The solution, labeled as “S” is where the 2 shadings
overlap!!

Ex:

Ex: