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Warm ups

Warm ups. Solve for x. x + 14 = 16 -11 + x = 4 5x – 3 = 4x + 2 -10x + 3 = 5 – 11x 6x + 3 – 4x = x - 6. x = 2 x = 15 x = 5 x = 2 x = -9. 7-1 Solving Inequalities using Addition and Subtraction. Objective: To solve inequalities by adding or subtracting. Standard 5.0.

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Warm ups

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  1. Warm ups Solve for x. • x + 14 = 16 • -11 + x = 4 • 5x – 3 = 4x + 2 • -10x + 3 = 5 – 11x • 6x + 3 – 4x = x - 6 • x = 2 • x = 15 • x = 5 • x = 2 • x = -9

  2. 7-1 Solving Inequalities using Addition and Subtraction Objective: To solve inequalities by adding or subtracting. Standard 5.0

  3. Inequalities – not equal is at least is at most

  4. Examples 1. 2. 3. 4. 5.

  5. Graphing – letter always on left Shade on number line – the arrow will tell you what direction to shade < open circle to left x < 7 > open circle to right x > -2 0 7 -2 0

  6. Graphing (continued) < closed circle to left x < -13 > closed circle to right x > 18 -13 0 0 18

  7. 4 Things you need: • Circle • Number and zero • Shaded or open circle • Arrow (shading) TOO: y > 28 r<31

  8. Translate, solve, and graph • Three times a number is more than the difference of twice that number and three.

  9. Homework • Pg. 388 # 17 - 39 • Don’t forget to shade! (It’s okay to be shady today)

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