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anonymous

  • one year ago

Anyone know the answer to this? http://prntscr.com/8oszs0

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  1. SolomonZelman
    • one year ago
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    \(\large\color{black}{ \displaystyle f(x)=-5x }\) when you compress the function vertically by 1/a, you divide by a: \(\large\color{black}{ \displaystyle f(x)=-(5/a)x }\) and when you reflect across the x-axis, you multiply the entire function times -1.

  2. SolomonZelman
    • one year ago
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    just mutliply the function times -1, and tell me the answer.

  3. anonymous
    • one year ago
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    3f(3x) = -15/3a)3x ??? No idea how to do this. Like, at all.

  4. anonymous
    • one year ago
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    @SolomonZelman

  5. SolomonZelman
    • one year ago
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    -(5/a)x times (-1) is (5/a)x.

  6. SolomonZelman
    • one year ago
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    and this is it.

  7. anonymous
    • one year ago
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    Whoops! I multiplied by 3 for some reason.

  8. SolomonZelman
    • one year ago
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    \(\large\color{black}{ \displaystyle f(x)=-5x }\) when you compress the function vertically by 1/4, you divide by 4: \(\large\color{black}{ \displaystyle {~~~~~~~~}=-(5/4)x }\) and when you reflect across the x-axis, you multiply the entire function times -1. \(\large\color{black}{ \displaystyle {~~~~~~~~}=(5/4)x }\)

  9. anonymous
    • one year ago
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    Gotcha. So would the answer be D, by chance?

  10. SolomonZelman
    • one year ago
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    Yes, it is D.

  11. anonymous
    • one year ago
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    Thanks!

  12. SolomonZelman
    • one year ago
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    yw

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