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Find an equation of the red line if a=−3, b=9 and an equation of the blue curve is y=x^2+8

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter8: Linear Functions

Section: Chapter Questions

Problem 3CR

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Find an equation of the red line if a=−3, b=9 and an equation of the blue curve is y=x^2+8

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Suppose the percent of males who enrolled in college within 12 months of high school graduation is given by y= -0.126x + 55.72 and the percent of females who enrolled in college within 12 months of high school graduation is given by y= 0.73x + 39.7, where x is the number of years after 1960. Use graphical methods to find the years after these models indicate that the percent of females equaled the percent of males.
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Suppose the percent of males who enrolled in college within 12 months of high school graduation is given by y =-0.126x+55.72 and the percent of females who enrolled in college within 12 months of high school graduation is given by y=0.73x+39.7, where x is the number of years after 1960. Use graphical methods to find the year these models indicate that the percent of females equaled the percent of males.