Tiffany's Algebra II  Help   Session

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This page was designed to help you with your Algebra II problems. Each problem will be explained step by step to make it easier to understand.
Problem	Explanations

 

3x + 2y = 8 x = 3y = 10   Find y                                                3(3y + 10) + 2y = 8 9y + 30 + 2y = 8 11y + 30 = 8 11y = -22 y = -2                Find x                       x = 3(-2) + 100 -6 + 10 x = 4	Linear Equations 1. Write both equations in the form Ax + By = C 2. Clear any decimals or fractions 3. Choose a variable to eliminate 4. Make the chosen variable's term additive inverses by multiplying one or both equations by a number 5. Eliminate the variable by adding the equations 6. Substitution to solve for the remaining variable Kill the Variables!
3x - 4y = -15 5x + y = -2 We solve the first equation for y because it's y term has a coefficient of 1. 3x- 4(-5x -2) = -15 3x + 20x + 8 = -15 23x + 8 = -15 23x = -23 x = 1  Then Find y 5x + y = -2 y = -5x -2 y = -5(-1)-2 y = 5-2 y = 3	Substituion Method The substitution method is a useful technique for solving systems in which a variable has a coefficient of 1.

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