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AGENDA WARM-UP LESSON 57 QUESTIONS?? LESSON 56 EXIT CARD.

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Presentation on theme: "AGENDA WARM-UP LESSON 57 QUESTIONS?? LESSON 56 EXIT CARD."— Presentation transcript:

1 AGENDA WARM-UP LESSON 57 QUESTIONS?? LESSON 56 EXIT CARD

2 WARM-UP Solve the given system by graphing. y = 3x – 2 y = -x – 6

3 LESSON 56: IDENTIFYING, WRITING, AND GRAPHING DIRECT VARIATION Math in Real Life Hourly Pay Cruise Control

4 When an equation has one variable that is equal to a constant times another variable, the equation represents a Direct Variation Equation: y = kx; k is a nonzero constant of variation Graph: a line that always passes through (0, 0) Words: y varies directly with x y is directly proportional to x

5 TELL WHETHER EACH EQUATION REPRESENTS A DIRECT VARIATION. IF YES, FIND THE CONSTANT OF VARIATION.

6 IDENTIFYING DIRECT VARIATION FROM ORDERED PAIRS

7 Write an equation for a direct variation that includes the point (5, 30)

8 The amount of water in a swimming pool is directly proportional to the time the water is left on. If the hose supplies 200 cubic feet of water per minute, how many cubic feet will be in the pool in half an hour?

9 Lesson 56 Pp. 365-366: A – I All, #1 – 11 All. CP: #18 Due Wednesday

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