A14­5CompoundIneq.notebook
November 05, 2015
Algebra 1
Ch.4 Notes Page 39
P39 4­5 Compound Inequalities
Sep 2­8:31 AM
Compound Inequalities
Compound Inequalities are two Inequalities
that are joined by the word and or the word or
And Means that both things have to be true
A and B (The Graphs will overlap)
2 < x < 5
Or Means either the first thing or the second thing have to be true
A or B (The Graphs might or might not overlap)
x < 3 or x > 5
Oct 20­9:12 AM
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A14­5CompoundIneq.notebook
November 05, 2015
AND Example
Write and Graph the Inequality
The books cost from $5 to $10
Oct 21­7:23 AM
Solving And Problems
5 < r + 3 < 10
Split into two parts:
5 < r + 3 and r + 3 < 10
Oct 21­7:29 AM
2
A14­5CompoundIneq.notebook
November 05, 2015
OR Example
Write and Graph the Inequality
Discounts are given to people under the age of 10 or over the age of 65
Oct 21­7:26 AM
Solving OR Problems
Solve each part then graph
4x + 3 < ­5 or ­2x + 7 < 1
Oct 21­7:28 AM
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