Problem solving with linear functions 2.

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SUMMARY

The discussion focuses on deriving a linear function for the selling price (p) of a product based on the quantity demanded (q). Given the points (25, 15) and (100, 10), the linear equation can be formulated using the slope-intercept form. The slope (m) is calculated as -0.05, leading to the equation p = -0.05q + 20. This function is valid for the domain where 20 ≤ q ≤ 150.

PREREQUISITES
  • Understanding of linear functions and slope-intercept form.
  • Ability to calculate the slope between two points.
  • Familiarity with domain and range concepts in mathematics.
  • Basic algebra skills for manipulating equations.
NEXT STEPS
  • Study the derivation of linear equations from two points.
  • Learn about the applications of linear functions in economics.
  • Explore the concept of domain and range in more depth.
  • Practice solving real-world problems using linear equations.
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Students studying algebra, educators teaching linear functions, and anyone interested in applying mathematical concepts to real-world pricing models.

davie08
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Homework Statement



Suppose the selling price p of a product is linearly related to the quantity demanded q. If p=$15 when q=25, and p=$10 when q=100, and if q is at least 20 but not more than 150, find p as a function of q.


Homework Equations





The Attempt at a Solution



I couldn't find a sample problem for this so I would just guess that the domain would be
20<q<150.
 
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If you were given two points, could you come up with a linear equation in slope-intercept form? If you can, then you should be able to do answer your question.
 

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