3x + 5y = 15 x2 + y2 10x 9 = 0 – – x 2y = 12 – x2 + y2 10x 4y + 4 = 0 – – 2x + y = 3 x2 + xy + y2 = 3 Three variables Solve the following for x, y, z. – 3x + 5y z = -3 – 2x + y 3z = -9 – x + 3y + 2z = 7 x + y + z = 1 2x 3y 2z = -9 – – 2x 3z = -16 – Inequalities Linear Solve the following inequality and graph your solution on a number line – 2x 3 5, x R – 3x 1 > 8, x N – 4x + 3 < 3x + 10, x R Compound Solve the following inequality and graph your solution on a number line – -5 < 3x + 1 7, x R 3 2x 3 < 7, x R – – 9 < 4x + 3 15, x R – Quadratic Inequalities 2x2 x 6 0 – – 2x2 11x + 5 > 0 – (2x 3)2 > 4 – < 3 > 3/2
3x + 5y = 15 x2 + y2 – 10x – 9 = 0 x – 2y = 12 x2 + y2 – 10x – 4y + 4 = 0 2x + y = 3 x2 + xy + y2 = 3 Three variables – Solve the following for x, y, z. 3x + 5y – z = -3 2x + y – 3z = -9 x + 3y + 2z = 7 x + y + z = 1 2x – 3y – 2z = -9 2x – 3z = -16 Inequalities Linear – Solve the following inequality and graph your solution on a number line 2x – 3 5, x R 3x – 1 > 8, x N 4x + 3 < 3x + 10, x R Compound – Solve the following inequality and graph your solution on a number line -5 < 3x + 1 7, x R – 3 2x – 3 < 7, x R – 9 < 4x + 3 15, x R Quadratic Inequalities 2x2 – x – 6 0 2x2 – 11x + 5 > 0 (2x – 3)2 > 4 < 3 > 3/2
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