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mskyeg

  • 2 years ago

Compare each function with the parent function. Without graphing, what are the vertex, axis of symmetry, and transformations of the parent function? y = –|8x + 4| – 2

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  1. mskyeg
    • 2 years ago
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    Possible answers: (1/2,2) ; x=-1/2 ; translated to the left 1/2 unit and up 2 units. (-1/2,-2) ; x=-1/2 ; translated to the left 1/2 unit, up 2 units, and reflected in the x-axis. (1/2,2) ; x=1/2 ; translated to the right 1/2 unit and up 2 units, and reflected in the y-axis. (1/2,-2) ; x=1/2 ; translated to the right 1/2 unit and up 2 units

  2. Hero
    • 2 years ago
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    First thing you should ask yourself is, "What is the parent function?". When you figure that out, you'll be half way there.

  3. mskyeg
    • 2 years ago
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    is it y=lxl

  4. Hero
    • 2 years ago
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    Yup

  5. mskyeg
    • 2 years ago
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    what do i do next?

  6. Hero
    • 2 years ago
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    Well, one thing you can do is insert the possible (x,y) values into the formula to see which ones work. Once you do that, you should be able to eliminate at least two of the answers.

  7. mskyeg
    • 2 years ago
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    what?

  8. mskyeg
    • 2 years ago
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    i am so confused

  9. Hero
    • 2 years ago
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    Are you not given (x,y) = (1/2, 2) ? Try that and see if it works. If not, try (x,y) = (-1/2,2)

  10. Hero
    • 2 years ago
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    Watch me plug one of the values into the formula: y = –|8x + 4| – 2 (2) = -|8(1/2) + 4| - 2

  11. Hero
    • 2 years ago
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    Does that make any sense?

  12. mskyeg
    • 2 years ago
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    i think so

  13. mskyeg
    • 2 years ago
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    oh wait ya thats simple

  14. mskyeg
    • 2 years ago
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    but that only eliminates 2 of the answers what about the last two

  15. mskyeg
    • 2 years ago
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    its not 1 or 3 right?

  16. Hero
    • 2 years ago
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    There's only one possible right answer. I just checked again. If you do the arithmetic properly, you should be able to find it.

  17. Hero
    • 2 years ago
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    You're on the right track.

  18. mskyeg
    • 2 years ago
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    is it number 2?

  19. Hero
    • 2 years ago
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    The second option is correct.

  20. mskyeg
    • 2 years ago
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    yay:) thank you so much:)

  21. Hero
    • 2 years ago
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    Good job. Sometimes you have to think outside the box with these questions.

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