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4.4 1
Section 4.4Inequalities in Two Variables
Graphs of Linear Inequalities x + y ≤ 4
Systems of Linear Inequalities x + y ≤ 4 x – y < 4
4.4 2
Checking Solutions
4.4 3
(3,1)
sidethatShade
yes
FTEvaluate
poaPick
linetheGraph
!31?
:/
int
4.4 4
4.4 5
Slope-Intercept Form Predicts Shading
4.4 6
ABOVE BELOWy > mx + b y < mx + b
4.4 7
Horizontal & Vertical Lines
4.4 8
Systems of Two Linear Inequalities Graph the first one, shading the solution Graph the second, shading in a different way Highlight the double-shaded areas
4.4 9
(not a 3-D graph)
Systems of Three Linear Inequalities Graph all three, looking for the common area
4.4 10
Next
Section 5.1 Introduction to Polynomials & Polynomial Functions
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