LCHL - The Modulus - Absolute Value (Algebra) - Exam Solutions

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Quadratic Inequalities

Geogebra (Graphing Website)

Key Points:
With Problems involving the |Absolute Value|:
Isolate the |Absolute Value| part of your problem on one side of your inequality sign.
Square both sides.
Simplify.
Again, just make sure your answers are applicable to your original question at the end.

When dealing with a graph (for example y = |x+2|), remember that this graph will not dip below the x axis.
Instead, once it hits the x axis, it will reflect up at the same angle that it hit the x axis at.

Best of luck!

Mr. Ludden
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1:11 Absolute Value on Calculator
4:47 Explanation of Thumbnail Meme
6:52 Absolute Value in a Graph (Using Geogebra)
11:26 Absolute Value on Computer Keyboard
12:09 2016, Paper 1, Q2(a) Solution
19:28 2016, Paper 1, Q2(a) Marking Scheme
22:58 2014, Paper 1, Q4(b) Solution
34:32 2014, Paper 1, Q4(b) Marking Scheme
35:48 Key Points

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