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Glencoe Math: Course 2, Volume 1

GM

Glencoe Math: Course 2, Volume 1 View details

9. Direct Variation

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Exercise 1 Page 85

How can you use the points on the direct variation graph to find the constant of variation?

30 lb per bag

Practice makes perfect

We want to find the constant of variation of the given direct variation graph. Let's take a look.

Next, we will use the points marked on the graph to find the constant of variation.

x	y	Constant of variation, yx
1	30	30/1= 30
2	60	60/2= 30
3	90	90/3= 30
4	120	120/4= 30

This constant tells us that the rate of change is 30 lb per bag of mulch.

Subchapter links

Guided Practice p.84

Independent Practice p.85-86

H.O.T. Problems p.86

Standardized Test Practice p.86-88

Extra Practice p.87

Common Core Review p.88