SFR LESSON NOTES Solving Inequalities Grade C/B Algebra
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Inequalities â&#x20AC;?2 < x â&#x2030;¤1 x is an integer Write down all the possible values for x
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C
Inequalities Solve 2x + 3 < 14
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C
Inequalities Solve 5x â&#x20AC;? 2 < 4
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B
Inequalities Solve 1 < 3x + 4 â&#x2030;¤ 13
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B & C
Inequalities
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2 3
4
5
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B
Inequalities Show each of the following; y≤3 ; x > 7 ; ‐3≤y<5 ; y = 2x + 3
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y = 3x ‐ 1
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y = 2x + 6
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4x + 5y = 20
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2x ‐3y = 12
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2 ways of drawing graphs 1) using y = mx + c eg.
2) Making x = 0 then y = 0 eg.
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Split these equations into 2 groups
3x + 2y = 6
5x ‐ 2y = 15 y = 4x ‐3
y = 6x ‐ 5
y=7‐x 6x + 5y = 30 y = 3x ‐ 9 2x ‐ 3y = 15 Draw these lines onto one grid
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