Over Lesson 2–5 A.A B.B C.C D.D 5-Minute Check 1 Find. A.–9 B. C. D.9 In a series of plays in a football game, a running back had the following yards per.

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Over Lesson 2–5 A.A B.B C.C D.D 5-Minute Check 1 Find. A.–9 B. C. D.9 In a series of plays in a football game, a running back had the following yards per play: –5, – 3, +2, +1, and –2. Find the mean running yardage for that series. A.–1.4 yd B.–0.2 yd C.0.6 yd D.–0.6 yd

Splash Screen

Then/Now You have already used ordered pairs to name and locate points. (Lesson 1–4) Graph points on a coordinate plane. Graph algebraic relationships.

Vocabulary quadrants

I give you the Coordinate Plane (we need graph paper now) Y-axis X-axis Quadrant I (+,+) Quadrant II (-,+) Quadrant III (-,-) Quadrant IV (+,-) Origin (0,0) Recall…we discussed the 4 Quadrants earlier in the year. Today, we will work with all 4 Quadrants.

Example 1 Write Ordered Pairs A. Write the ordered pair that names point P. The x-coordinate is 4. The y-coordinate is –2. Answer: The ordered pair is (4, –2).

Example 1 Write Ordered Pairs B. Write the ordered pair that names point Q. The x-coordinate is –3. The y-coordinate is –1. Answer: The ordered pair is (–3, –1).

A.A B.B C.C D.D Example 1 A.(2, 3) B.(–3, –2) C.(–2, –3) D.(–3, 2) A. Write the ordered pair that names point M.

A.A B.B C.C D.D Example 1 A.(4, –1) B.(4, 1) C.(1, –4) D.(–1, 4) B. Write the ordered pair that names point N.

Example 2 Graph Points and Name the Quadrant A. Graph and label S(–1, –5) on a coordinate plane. Name the quadrant in which the point lies. Start at the origin. Answer: Point S is in Quadrant III. Move 1 unit left. Then move 5 units down and draw a dot.

Example 2 B. Graph and label U(–2, 3) on a coordinate plane. Name the quadrant in which the point lies. Answer: Point U is in Quadrant II. Start at the origin. Move 2 units left. Then move 3 units up and draw a dot. Graph Points and Name the Quadrant

A.A B.B C.C D.D Example 2 A.Quadrant I B.Quadrant II C.Quadrant III D.Quadrant IV A. Graph and label A(3, –4) on a coordinate plane. Name the quadrant in which the point lies.

A.A B.B C.C D.D Example 2 A.Quadrant I B.Quadrant II C.Quadrant III D.Quadrant IV B. Graph and label B(–2, 1) on a coordinate plane. Name the quadrant in which the point lies.

Example 3 Graph an Algebraic Relationship GAMES Mrs. Gossell’s class is playing a classroom quiz game. The difference between Ali’s and Joachim’s scores is 3 points. If x represents Ali’s score and y represents Joachim’s score, make a table of possible values for x and y. Then graph the ordered pairs and describe the graph. First, make a table. Choose values for x and y that have a difference of 3.

Example 3 Then graph the ordered pairs on a coordinate plane. Graph an Algebraic Relationship

Example 3 Answer: The points in the graph are on a line that slants upward to the right. The line crosses the y-axis at y = –3. Graph an Algebraic Relationship

A.A B.B C.C D.D Example 3 A. The sum of two integers is 3. If x represents the first integer and y represents the second integer, make a table of possible values for x and y. A.B. C.D.

End of the Lesson