The Math Dude substitutes when his variable is isolated.

Unit 4.2: Solving Systems by Substitution

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Hand it to The Math Dude to find yet another method of solving systems of equations.

Unit 4.3: Solving Systems by Linear Combinations

A linear equation by any other name graphs the same. So sayeth The Math Dude.

Unit 3.5: Point-Slope Form

The Math Dude steps up to write the equations of lines in Slope-Intercept Form.

Unit 3.4: Writing Equations Of Lines

The Math Dude doesn't need a computer to graph a line if he knows the slope and y-intercept.

Unit 4.2: Solving Systems by Substitution

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