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Introduction to Simultaneous Equations

Algebra and Graphs Introduction to Simultaneous Equations

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Equations with two variables
Graphical solutions to linear equations in two variables

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Using the equation x + 2y = 20 to illustrate prices of items with various solutions for variables x and y, illustrating multiple solutions.

Solving the equation 10 + 2y = 20 by plugging in x = 10 and finding y = 5, illustrating linear equations in two variables.

Graphical solution of the system of equations y = -0.5x + 10 and x + 2y = 20 with highlighted intersection point (8, 6).

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