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For more information, please see full course syllabus of SAT: Mathematics
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Systems of Equations

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • The Basics: Systems of Equations 0:19
    • Equations with Infinite Solutions
    • Number of Equations Should Match the Number of Unknowns
  • Manipulation and Combination 4:34
  • Manipulation and Combination: Really? 7:23
  • Manipulation and Combination: Coefficients 10:41
  • Manipulation and Combination: Steps 13:50
  • Substitution 15:49
  • Which Method Should Be Used? 20:13
  • Oh No, Three Equations? 22:58
  • Three Equation Example 24:22