Main Idea and New Vocabulary Example 1: Graph Quadratic Functions

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Presentation transcript:

Main Idea and New Vocabulary Example 1: Graph Quadratic Functions Example 3: Real-World Example Lesson Menu

Graph quadratic functions. Main Idea/Vocabulary

Graph Quadratic Functions Graph y = 5x2. To graph a quadratic function, make a table of values, plot the ordered pairs, and connect the points with a smooth curve. Example 1

Graph Quadratic Functions Answer: Example 1

Graph y = 4x2. A. C. B. D. Example 1 CYP

Graph Quadratic Functions Graph y = –x2 – 2. Example 2

Graph Quadratic Functions Answer: Example 2

Graph y = –2x2 + 2. A. C. B. D. Example 2 CYP

Time cannot be negative, so use only positive values of t. GRAVITY The equation d = 16.065t2 describes the distance d in feet that a stone falls off a cliff during time t. Graph this function. Then use the graph to estimate how long it would take a stone to fall 200 feet. Time cannot be negative, so use only positive values of t. Example 3

Answer: It would take a stone about 3.5 seconds to fall 200 feet. Example 3

GRAVITY The equation d = –16t2 + 48 describes the distance d in feet that a falling acorn is from the ground at time t seconds. Graph this function. Then use the graph to estimate how long it would take the acorn to hit the ground. A. about 0.5 second B. about 1.7 seconds C. about 16 seconds D. about 48 seconds Example 3 CYP