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RATIO AND PROPORTION

RATIO AND PROPORTION . Section 11.1. Definitions. Ratio : compares 2 quantities using the same unit Proportion : an equation that states that 2 ratios are equal “a is to b as c is to d”. Properties of Proportions. Solving a Proportion. STEPS: Cross multiply

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RATIO AND PROPORTION

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  1. RATIO AND PROPORTION Section 11.1

  2. Definitions • Ratio: compares 2 quantities using the same unit • Proportion: an equation that states that 2 ratios are equal • “a is to b as c is to d”

  3. Properties of Proportions

  4. Solving a Proportion • STEPS: • Cross multiply • Simplify by combing like terms • Solve for the variable • If there is an x2 then factor if necessary • Check for extraneous solutions

  5. Examples 1. 2.

  6. Examples 3. 4.

  7. Examples 5. 6.

  8. Classwork • Pg 646 # 2-14

  9. Homework: • Pg 646 # 17-39 odd

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