1 / 17

7/8. RP/EE Unit Review

7/8. RP/EE Unit Review. Given the equation, determine if the solution is “Always true”, “Sometimes true”, or “Never true”.  Show your work and explain why. 1.   x - 15 = 17 + x      2.  12 x  = 5 x      3.  1.5 x (-8) = -12 x.

corin
Download Presentation

7/8. RP/EE Unit Review

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. 7/8. RP/EE Unit Review

  2. Given the equation, determine if the solution is “Always true”, “Sometimes true”, or “Never true”.  Show your work and explain why.1.  x - 15 = 17 + x      2.  12x  = 5x      3.  1.5x (-8) = -12x

  3. Matthew wants to buy a new video game.  He goes to Best Buy and sees that they have the game on sale for $12.50 off the original price.   He is ready to purchase the game when Mary Beth informs Matthew that, next door at Game Stop, the same game is on sale for 35% off the original price.  For what original price will these discounts be equal, if ever?  Explain your reasoning.

  4. Matthew wants to buy a the new video game.  he goes to the Best buy and sees that they have the game on sale for $12.50 off the original price.   He is ready to purchase the game when Mary Beth informs Matthew that next door at Game Stop the same game is on sale for 35% off the original price.  For what original price will these discounts be equal, if ever?  Explain your reasoning. Y = x – 12.50 When x = $35.71, the discount Y = .65x will be the same. Or .35x = 12.50

  5. Does this graph represent a function?

  6. NO because it does not pass the vertical line test Does this graph represent a function?

  7. Create a real life “story” that could be represented by this equation: 12.5 + 10x = 155

  8. Systems of Equations The Collen family is having a cookout. They need a total of 20 burgers. The cost of beef burgers at the butcher counter is $2.50 and the cost of organic turkey burgers is $3.25. This can be represented by this system of equations. x + y = 20 2.5x + 3.25y = 57.5 Maddie insists we ordered the same number of each type. Is she correct?

  9. Systems of Equations The Collen family is having a cookout. They need a total of 20 burgers. The cost of beef burgers at the butcher counter is $2.50 and the cost of organic turkey burgers is $3.25. This can be represented by this system of equations. x + y = 20 2.5x + 3.25y = 57.5 Maddie insists we ordered the same number of each type. Is she correct? Yes, she is correct.

  10. In January, after Betsy made a deposit she had a balance of $125. Shedeposited the same amount each month and at the end of May, after her deposit, she had $265 in her account. • How much money did she save each month?

  11. In January, after Betsy made a deposit she had a balance of $125. She deposited the same amount each month and at the end of May, after her deposit, she had $265 in her account. • How much money did she save each month? • $35

  12. In January, after Betsy made a deposit she had a balance of $125. She deposited the same amount each month and at the end of May, after her deposit, she had $265 in her account. Write a function (equation), in slope intercept form, to represent the relationship between the money saved and the months.

  13. In January, after Betsy made a deposit she had a balance of $125. She deposited the same amount each month and at the end of May, after her deposit, she had $265 in her account. Write a function (equation), in slope intercept form, to represent the relationship between the money saved and the months. Let x = month; let y = total balance Y = 35x + 90

  14. In January, after Betsy made a deposit she had a balance of $125. She deposited the same amount each month and at the end of May, after her deposit, she had $265 in her account. How much money had she saved by the end of August?

  15. In January, after Betsy made a deposit she had a balance of $125. She deposited the same amount each month and at the end of May, after her deposit, she had $265 in her account. How much money had she saved by the end of August? $370

  16. Vocabulary” Define slope. Rise/run; change in y/change in x Define rate of change. How quickly one value changes (y) in relation to the other (x) Define “function” Set of two variable data where each x value is paired with only one y What is a test used to determine if a graph represents a function? The vertical line test

  17. Which of the following functions are linear? a) y = 2x - 9 b) -3x – 14 = 335 c) x2– y = 18 d) 2x + 3y = 203 • a & d • Which of the above is quadratic? • c • Which is exponential? • b

More Related