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Finding Equations From Graphs and Real Life Situations

Finding Equations From Graphs and Real Life Situations. Get warmed up…. Is the slope: a) Positive b) negative c) zero d) no slope. Get warmed up…. Is the slope: a) Positive b) negative c) zero d) no slope. Get warmed up…. Is the slope:

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Finding Equations From Graphs and Real Life Situations

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  1. Finding Equations From Graphs and Real Life Situations

  2. Get warmed up… Is the slope: a) Positive b) negative c) zero d) no slope

  3. Get warmed up… Is the slope: a) Positive b) negative c) zero d) no slope

  4. Get warmed up… Is the slope: a) Positive b) negative c) zero d) no slope

  5. Get warmed up… Is the slope: a) Positive b) negative c) zero d) no slope

  6. Challenge #1Find the Equation from a Graph

  7. #1 C) What is the equation of the line? Y = 2x Y = .5x + 1 Y = 2x + 1 What is the y-intercept (b)? B) What is the slope (m)?

  8. #2 C) What is the equation of the line? Y = -2x -1 Y = .5x - 1 Y = 2x - 1 What is the y-intercept (b)? B) What is the slope (m)?

  9. #3 C) What is the equation of the line? Y = 1x +2 Y = 2x Y = 2 What is the y-intercept (b)? B) What is the slope (m)?

  10. #4 C) What is the equation of the line? Y = 3x - 1 Y = .33x - 1 Y = -.33x - 1 What is the y-intercept (b)? B) What is the slope (m)?

  11. #5 C) What is the equation of the line? Y = 3x + 2 Y = -3x + 2 Y = .33x What is the y-intercept (b)? B) What is the slope (m)?

  12. How to make an equation from a graph

  13. Challenge #2Find the equation of a real life situation

  14. #1 Derek started with no money in his bank account, but he just got a job mowing lawns and he gets $20 a week. He puts all of it in his account. How much money will he have in his account in x weeks? C) What is the equation? Y = 20x Y = -20x + 0 Y = x + 20 What is the y-intercept (b)? B) What is the slope (m)?

  15. #2 Rosa has a bank account with $120 in it and she takes out $5 a week. How much money will she have in her account in x weeks? C) What is the equation? Y = 120x + 5 Y = 120 + 5 Y = -5x + 120

  16. #3 Frank has an iphone. The iphone costs $39 a month plus $0.01 a minute. What is the equation for his monthly bill? C) What is the equation? Y = 39x Y = 39x + 0.01 Y = 0.01x + 39

  17. #4 David was raising money for the school in a walkathon. He got $100 pledged no matter what plus $6 for every mile he walked. What is the equation for how much money he will make? C) What is the equation? Y = 100x + 6 Y = 6x + 100 Y = 106x

  18. Challenge ProblemWhat is the slope of a line that passes through (7,1) and (6,5)?

  19. Do you feel like you can find an equation from a graph or situation?1-31: still confused 2: getting the idea but a little unsure 3: got it.

  20. Now try it on your own!

  21. 9 Linear Equations #1-14Time: 15 minutes 10 11 O 13 14 12 2 3 4 1 6 7 8 5 • Solve each problem in any order • Click in your answer • If a number shows up instead of a letter just make sure the number and letter are on the same button and then send • You can skip ahead or change answers to past problems by using the arrow keys • When done: work on challenge sheet (for this you will need to use a pencil)

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