In Exercises 19–22, find the slope of the curve at the point indicated.    19. y = 5x - 3x2, x = 1            20. y = x3 - 2x + 7, x = -2   21. y = 1 /(x - 1) , x = 3          22. y = (x - 1 )/(x + 1) , x = 0

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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ISBN:9780547587776
Author:HOLT MCDOUGAL
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Chapter8: Linear Functions
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In Exercises 19–22, find the slope of the curve at the point indicated.   

19. y = 5x - 3x2, x = 1            20. y = x3 - 2x + 7, x = -2  

21. y = 1 /(x - 1) , x = 3          22. y = (x - 1 )/(x + 1) , x = 0

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