5-Minute Check Lesson 4-2 Answer: 2

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Presentation transcript:

5-Minute Check Lesson 4-2 Answer: 2 If y varies jointly as x and z and inversely as the square of w, and y=3 when x=3, z=10 and w=2, find y when x=4, z=20 and w=4. Answer: 2

4-2 Warm Up #2 Is x = -1 a root of What does the root represent graphically in question #1? What is the root of How many roots does have? What are the roots of Yes ; 0 = (-1)(-1) + 2(-1) + 1 The x-intercepts of the graph. X= -5/3 2; there are two x-intercepts in the graph x = -1.19 & x = 4.19

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