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MATH 1111 - College Algebra: 3.1 Linear Functions

3.1 Linear Functions

At the end of this section students will be able to:

  • Find the slope of a line
  • Determine the equation of a line in point-slope form
  • Determine the equation of a line in slope-intercept form
  • Find the x- and y-intercepts of a line
  • Graph a linear function
  • Solve applications using linear functions

Required Reading

2.1 Linear Functions

Stitz-Zeager College Algebra - pages 151-162

Practice Exercises

Stitz-Zeager College Algebra - pages 163-168

Answers to practice exercises can be found on pages 169-172.

Supplemental Resources

Slope of a Line (tutorial): West Texas A&M University Virtual Math Lab (College Algebra Tutorial 25)

Equations of Lines (tutorial): West Texas A&M University Virtual Math Lab (College Algebra Tutorial 26)

Graphing Lines (tutorial): West Texas A&M University Virtual Math Lab (College Algebra Tutorial 27)

 

Finding the x- and y-intercepts:

 

Graphing Linear Functions Using Slope:

 

Applications of Linear Functions (Simple Interest Formula):