Pre-Algebra Lesson 8-9

# Pre-Algebra Lesson 8-9 - following ordered pairs on your...

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Graphing Inequalities Objective: To graph linear inequalities.

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5-Minute Check Use a graph to solve each system of equations. 1. y = x + 1 and y = -x + 3 2. 2x – y = 6 and x = y + 2
Graphing Inequalities The graph of y = x + 2 is shown. Graph the following ordered pairs on your coordinate system. (3, 4), (3,-2), (-2, -1), (-1, 0), (4, 4), (0, 3) a. Where do these points lie in the plane in relation to the graph of y = x + 2?

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Graphing Inequalities The graph of y = x + 2 is shown. Graph the following ordered pairs on your coordinate system. (3, 4), (3,-2), (-2, -1), (-1, 0), (4, 4), (0, 3) b. Which sentence, y = x + 2, y > x + 2, or y < x + 2, is true for all of the ordered pairs you graphed?
Graphing Inequalities The graph of y = x + 2 is shown. Graph the following ordered pairs on your coordinate system. (3, 4), (3,-2), (-2, -1), (-1, 0), (4, 4), (0, 3) c. Which sentence, y = x + 2, y > x + 2, or y < x + 2, is true for the points located above the graph of y = x + 2?

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Graphing Inequalities The graph of y = x + 2 is shown. Graph the

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Unformatted text preview: following ordered pairs on your coordinate system. (3, 4), (3,-2), (-2, -1), (-1, 0), (4, 4), (0, 3) d. How many points belong to the graph of y < x + 2? Graphing Inequalities The line is the boundary of the two regions. The blue region is the “greater than” (>) area and the yellow region is the “less than” (<) area. Graphing Inequalities When the line that represents y = x + 2 is solid, not dashed, it means that the points on the line are included in the inequality. So we would state that the blue are can be represented by y ≥ x + 2. And, the yellow could be represented by y ≤ x + 2. Graphing Inequalities When the line that represents y = x + 2 is dashed, it means that the points on the line are not included in the inequality. So we would state that the blue are can be represented by y x + 2. And, the yellow could be represented by y < x + 2. Graphing Inequalities Assignment: 20 – 42E, 44 - 56 all. Pages 421 & 422...
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## This note was uploaded on 12/01/2011 for the course MATH 110 taught by Professor Staff during the Fall '08 term at BYU.

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Pre-Algebra Lesson 8-9 - following ordered pairs on your...

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