2-7 Solving Proportions.

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Presentation transcript:

2-7 Solving Proportions

Proportion An equation that states that two ratios are equal

Solving a proportion using cross products 7 = m 8 12 Use cross products Multiply 7 x 12 and 8 x m 8m = 84 Solve for m http://www.pearsonsuccessnet.com/snpapp/iText/products/0-13-368848-8-01/media/National/NA_SDC_A1/A1G0207_01SOP.mp4

Q = 4 8 5 -3 = x 4 26

Solve a Multi-Step Proportion B – 8 = b + 3 5 4 http://www.pearsonsu ccessnet.com/snpapp/i Text/products/0-13- 368848-8- 01/media/National/ NA_SDC_A1/A1G02 07_03SOP.mp4

A – 2 = 2 9 3

Using a proportion to solve a problem http://www.pearsonsuccessnet.com/snpapp/iText/products/0-13- 368848-8-01/media/National/NA_SDC_A1/A1G0207_04SOP.mp4

Homework 2-7 Practice