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1.4 Rewriting Equations & Formulas

1.4 Rewriting Equations & Formulas. p. 26. Solve 11x-9y= -4 for y. -11x -11x -9y=-11x-4 -9 -9 -9. Solve 7x-3y=8 for x. +3y +3y 7x=3y+8 7 7 7. Examples. Turn to page 28 in your book. Know the Common Formulas Chart on this page!.

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1.4 Rewriting Equations & Formulas

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  1. 1.4 Rewriting Equations & Formulas p. 26

  2. Solve 11x-9y= -4 for y. -11x -11x -9y=-11x-4 -9 -9 -9 Solve 7x-3y=8 for x. +3y +3y 7x=3y+8 7 7 7 Examples

  3. Turn to page 28 in your book. Know the Common Formulas Chart on this page!

  4. Ex: Solve the area of a trapezoid formula for b1. A = ½ (b1+b2) h 2A = (b1+b2) h

  5. Last Example: • You are selling 2 types of hats: baseball hats & visors. Write an equation that represents total revenue. Price of baseball cap # of caps sold # of visors sold Total Revenue Price of visor R = p1B + p2V

  6. Assignment

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