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2.20 Solving Inequalities.notebook
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February 28, 2018
Nov 410:26 AM
Solving Inequalities
Homework Handout #s 1acegi, 2aceg, 3aceg, 4ac
Mar 197:45 AM
Warm Up:Determine the type of function.
2.20 Solving Inequalities.notebook
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February 28, 2018
Mar 197:45 AM
x is less than or equal to y
x is less than y
x is greater than or equal to y
x is greater than y
Inequality Symbols
Mar 197:45 AM
To indicate specific points as part of a set we draw points.
If it is a continuous group of numbers (where everything in between is included) we draw a line on the number line.
To indicate less than or equal to use a coloured in circle
To indicate less than use an open circle
Graphing on a Number Line
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Set notation is a way to describe a group of numbers.
We use: "curly" brackets to indicate set notation { } the | symbol in set notation means "such that"
the ∈ means "element of" the R means the set of Real Numbers
Set Notation
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Graph on a number line.a) {2, 4, 6, 8, 10}
b) {x∈R | 3 < x ≤ 10}
Example
2.20 Solving Inequalities.notebook
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February 28, 2018
Mar 197:45 AM
Same rules as solving equations.
Only difference is multiplying or dividing by a negative
when we multiply or divide by a negative we have to switch the direction of the inequality.
Why?
Solving Inequalities
Jan 2013:37
Solve the inequality and graph the solution on a number line
2.20 Solving Inequalities.notebook
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February 28, 2018
Mar 197:45 AM
Handout #s 1acegi, 2aceg, 3aceg, 4ac
Homework