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Solve problems using direct, inverse, and joint variations.
Remarks
Example 1: According to Hooke's Law, the force needed to stretch a spring is directly proportional to the net spring stretch (stretched spring length minus original spring length). If 20 Newtons (N) force results in a net spring stretch of 5 centimeters, what is the net spring stretch achieved when a force of 80N is applied (assuming 80N force does not exceed the spring's stretch limit)?
Example 2: On Monday, your drive to work takes 10 minutes and your average speed is 30 mph. On Tuesday, your drive on the same route takes 15 minutes. What is your average speed on Tuesday?
General Information
Subject Area: X-Mathematics (former standards - 2008)
Grade: 912
Body of Knowledge: Algebra
Idea: Level 3: Strategic Thinking & Complex Reasoning
Standard: Relations and Functions - Draw and interpret graphs of relations. Understand the notation and concept of a function, find domains and ranges, and link equations to functions.
Date Adopted or Revised: 09/07
Content Complexity Rating:
Level 3: Strategic Thinking & Complex Reasoning
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More Information
Date of Last Rating: 06/07
Status: State Board Approved - Archived
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