DO NOW
Write each equation in slopeintercept form:
1. 2x – 3y = 9
2. y + 3x = 6
3. 4y – 3x = 1
DO NOW
DO NOW
DO NOW
Linear Inequalities
Objective:
SWBAT graph linear inequalities
Linear Inequalities
Same process as graphing
linear equations:
• Plot y-intercept
• Use slope to find other points
Linear Inequalities
y  2x  3
Linear Inequalities
Boundary Lines
• If the symbol is < or >, draw a
dashed boundary line
• This shows that the points on the
line ARE NOT included as solutions
• This is like an open dot
Boundary Lines
• If the symbol is < or >, draw a
solid boundary line
• This shows that the points on the
line ARE included as solutions
• This is like a solid dot
Linear Inequalities
Shading
• If the symbol is < or <, shade
below the boundary line
• If the symbol is > or >, shade
above the boundary line
AFTER PUTTING THE INEQUALITY IN
SLOPE-INTERCEPT FORM
Linear Inequalities
Walk-Through
Graph the linear inequality below on
a coordinate plane:
3x  5 y  10
Walk-Through
3x  5 y  10
Walk-Through
Independent Practice
Pg. 407 #’s 7-18 all
CHALLENGE:
#’s 23-24, 34-42

Exit Slip
Which inequality is represented by the graph
below?
(1) y < 2x + 1
(2) y < -2x + 1
(3) y > 2x + 1
(4) y < -2x + 1
Journal Entry #4

Homework
Workbook Pg. 377
#’s 2-10 even, 16, 18
