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anonymous

  • 5 years ago

Tell weather the graph opens up or down Identify the vertx tell if the graph is wider or narrower or the same as the graph of Y =|X| f(x)=2| x+2| +8

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  1. anonymous
    • 5 years ago
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    You know how translating functions works right?

  2. anonymous
    • 5 years ago
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    no.

  3. anonymous
    • 5 years ago
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    xavier can you help me please

  4. anonymous
    • 5 years ago
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    Well what you add to the x is how many units the function is moves to the left. What you add outside is how many units up. So f(x)=2|x-h|+k has been moves h to the right and k up. Since the vertex was originally at (0,0) its not at (h,k)

  5. anonymous
    • 5 years ago
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    now at (h,k)

  6. anonymous
    • 5 years ago
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    so the vertex is 0,0

  7. anonymous
    • 5 years ago
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    Its originally (0,0) on the graph y=|x| but since you did that stuff to it, it moved to (h,k) where f(x)=2|x-h|+k. In this case h=-2 and k=8 so the vertex is at (-2,8)

  8. anonymous
    • 5 years ago
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    okay does it open up or down and is it narrow or wider

  9. anonymous
    • 5 years ago
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    If the number in front of the absolute value is positive, then it opens up. If negative it opens down. If the absolute value of that number is greater than 1, then its narrower. If the absolute value is less than 1, then its wider.

  10. anonymous
    • 5 years ago
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    so its narrower :)

  11. anonymous
    • 5 years ago
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    Right?

  12. anonymous
    • 5 years ago
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    Yeah. How about the way it opens?

  13. anonymous
    • 5 years ago
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    it opens up?

  14. anonymous
    • 5 years ago
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    Yup. :)

  15. anonymous
    • 5 years ago
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    can you do another one for me ?

  16. anonymous
    • 5 years ago
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    Sure but lets see how far you can get first before I help. Look over how we did this one

  17. anonymous
    • 5 years ago
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    f(x)=7|x-3|-4

  18. anonymous
    • 5 years ago
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    okay so i think it open up

  19. anonymous
    • 5 years ago
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    and the x=3 but i can tfind the second number

  20. anonymous
    • 5 years ago
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    f(x)=a|x-h|+k. Remember vertex is at (h,k)

  21. anonymous
    • 5 years ago
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    yes and h=3 right?

  22. anonymous
    • 5 years ago
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    Yeah

  23. anonymous
    • 5 years ago
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    but i cant find k i think its 1 but idk

  24. anonymous
    • 5 years ago
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    You have f(x)=7|x-3|-4 f(x)=a|x-h|+k Look at the placement of the letters.

  25. anonymous
    • 5 years ago
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    -4 is k?

  26. anonymous
    • 5 years ago
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    Yeah.

  27. anonymous
    • 5 years ago
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    okay so the vertex is 3,-4

  28. anonymous
    • 5 years ago
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    and it opens up and its narrower

  29. anonymous
    • 5 years ago
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    Yup you got it

  30. anonymous
    • 5 years ago
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    everything is right?

  31. anonymous
    • 5 years ago
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    Yeah

  32. anonymous
    • 5 years ago
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    yesss thank you so much :)

  33. anonymous
    • 5 years ago
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    Np

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