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Published byMervin Palmer Modified over 6 years ago

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A.4f Apply these skills to solve practical problems. A.4b Justify steps used in solving equations. Use a graphing calculator to check your solutions. Objectives :

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To isolate the variable on one side of the equation. Ex: x = 5 is solved for ____. y = 2x - 1 is solved for ____.

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For any numbers a, b, and c, _________________________________ What it means: You can multiply _____ ________of an equation by any number and the equation will still hold true.

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We all know that 3 = 3. Does 3(4) = 3? _______ But 3(4) = 3_____. The equation is still true if we multiply _______ _______ by 4.

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Always check your solution!! x = 4 2

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Division Property of Equality For any numbers a, b, and c (c≠0), ________________________________ What it means: You can divide ______ _______of an equation by any number, except zero, and the equation will still hold true. Why did we add c ≠ 0?

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2) -6x = 181) 4x = 24

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The one step method: Ex: 2x = 4 3 The two step method: Ex: 2x = 4 3

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Solve -3v = -129 1. v = -126 2. v = -43 3. v = 43 4. v = 126

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Which step clears the fraction in 1. Multiply by 3 2. Multiply by 5 3. Multiply by -12 4. Multiply by -5

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Solve 1. b = -56 2. b = -14 3. b = 14 4. b = 56

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