1 / 12

solve literal equations (formulas) for a specified variable. SOL: A.4a

Objective The student will be able to:. solve literal equations (formulas) for a specified variable. SOL: A.4a. Designed by Skip Tyler, Varina High School. Answer Now. 1) Solve 2x - 4y = 7 for x To get x by itself, what is the first step?. Add 2x Subtract 2x Add 4y Subtract 4y.

leiko
Download Presentation

solve literal equations (formulas) for a specified variable. SOL: A.4a

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. ObjectiveThe student will be able to: solve literal equations (formulas) for a specified variable. SOL: A.4a Designed by Skip Tyler, Varina High School

  2. Answer Now 1) Solve 2x - 4y = 7 for xTo get x by itself, what is the first step? • Add 2x • Subtract 2x • Add 4y • Subtract 4y

  3. Ask yourself, What is the first thing we are doing to x? What is the second thing? 1) Solve 2x - 4y = 7 for xUse a DO-UNDO chart to help determine the steps DO UNDO · 2 -4y Follow the steps in the ‘undo’ column to isolate the variable. +4y ÷ 2 Complete the undo column by writing the opposite operations in opposite order.

  4. D U 1) Solve 2x - 4y = 7 for x · 2 -4y +4y ÷ 2 + 4y + 4y 2x = 7 + 4y 2 2 • Draw “the river” • Add 4y to both sides • Simplify • Divide both sides by 2 • Does it simplify? This fraction cannot be simplified because both terms in the numerator are not divisible by 2.

  5. Answer Now 2) Solve 2x - 4y = 7 for yTo get y by itself, what is the first step? • Add 2x • Subtract 2x • Add 4y • Subtract 4y

  6. D U 2) Solve 2x - 4y = 7 for y · -4 +2x -2x ÷ -4 - 2x - 2x -4y = 7 - 2x -4 -4 • Draw “the river” • Subtract 2x from both sides • Simplify • Divide both sides by -4 • Does it simplify? Nope!

  7. Answer Now 3) Solve for y.What is the first step? • Multiply by 3 • Divide by 3 • Add a • Subtract a

  8. D U 3) Solve for y: + a ÷ 3 · 3 - a • Draw “the river” • Clear the fraction – multiply both sides by 3 • Simplify • Subtract a from both sides • Simplify y + a = 3c -a -a y = 3c - a

  9. Answer Now 4) Solve for y: 4x – 2y = 12 • -4x + 12 • 4x - 12 • -2x + 6 • 2x - 6

  10. D U 4) Solve for y: 4x – 2y = 12 · -2 + 4x - 4x ÷ -2 - 4x - 4x -2y = 12 – 4x -2 -2 y = -6 + 2x or y = 2x - 6 • Draw “the river” • Subtract 4x from both sides • Simplify • Divide both sides by -2 • Does it simplify? Yes!

  11. Answer Now 5) The formula for the volume of a rectangular prism is V = LWH. Which equation solves the formula for L? • L = V - WH

  12. Answer Now 6) The formula for the volume of a pyramid is V = . Which equation solves the formula for h? • h = 3Vb

More Related