Make the connection between the intersection of two functions and a system of equations. The class watches an informative algebra video on finding the point of intersection of two linear functions. The presenter shows the steps to prove they are the same steps of finding the solution of a linear system with both equations written in slope-intercept form. Both functions contain fractional coefficients, allowing the procedure to include clearing the fractions.

Concepts

systems of equations, functions, linear functions, graphing functions

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Instructional Ideas

• Lead a discussion on finding a more efficient value to use to clear the fractions in the equation

Classroom Considerations

• Assumes the class can solve an equation in one variable
• Requires knowledge of function notation

• This video is hosted on YouTube

Pros

• Uses colors to help keep track of the steps in solving
• Verifies the solution graphically

Cons

• None

Common Core

SL.9-10.2 MP5 MP6 HSA-REI.C.6 HSA-REI.D.11