Chapter 2 Linear Equations and Functions - 2.5 Model Direct Variations - 2.5 Exercises - Skill Practice - Page 110: 30

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One thing that shows direct variation is the number of apples you buy from the store. After all, every apple costs the same rate, and there are no additional fees. Another example is the amount paid and the hours worked at a job (assuming no bonuses), for the rate starts as 0 and increases linearly.