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Direct Variation: Recipe Scaling Problem

Algebra · Algebra 1 · Big Ideas Math · Ron Larson · Chapter 3-

Course: Algebra Book: Algebra 1 · Big Ideas Math · Ron Larson Chapter: Chapter 3-

Question

Question:
A recipe for trail mix requires 3 cups of nuts for every 2 cups of dried fruit. Write a direct variation equation relating the cups of nuts, n, to the cups of dried fruit, d. Then determine how many cups of nuts are needed if you use 8 cups of dried fruit.

Direct Variation: Recipe Scaling Problem

This lesson introduces direct variation equations of the form n = k·d, where k is the constant of variation. Students learn to identify k from a given ratio, write the equation, graph the relationship, and use it to solve for an unknown quantity.

In this lesson, you will learn to:
• Identify the constant of variation from a given ratio and write a direct variation equation
• Graph a direct variation equation as a line through the origin and interpret its slope
• Substitute a known value into a direct variation equation to solve for an unknown

Course: Algebra1 · Big Ideas Math · Ron

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