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anonymous

  • one year ago

Which graph represents the function of f(x) = the quantity of 4 x squared minus 4 x minus 8, all over 2 x plus 65?

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  1. anonymous
    • one year ago
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    @jdoe0001

  2. anonymous
    • one year ago
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    where the graph

  3. anonymous
    • one year ago
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    i meant using graphing technology, and then tell where the point of discontinuity is on the graph

  4. jdoe0001
    • one year ago
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    or \(\bf \cfrac{4x^2-4x-8}{2x+2}\implies \cfrac{4(x^2-x-2)}{2(x+1)}\implies \cfrac{4\cancel{(x+1)}(x-2)}{2\cancel{(x+1)}} \)

  5. anonymous
    • one year ago
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    yes so it would be 2(x-2)

  6. jdoe0001
    • one year ago
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    btw, you can zoom in/out on those graphs, by using the middle-mouse button

  7. anonymous
    • one year ago
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    would the point go on (-1,-6) or (1,-2)??

  8. jdoe0001
    • one year ago
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    yes

  9. anonymous
    • one year ago
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    graph of 2 x minus 4, with discontinuity at negative 1, negative 6 OR graph of 2 x minus 4, with discontinuity at 1, negative 2

  10. jdoe0001
    • one year ago
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    well... hold the mayo... notice, if x = -1 the denominator turns 0

  11. anonymous
    • one year ago
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    Confused

  12. jdoe0001
    • one year ago
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    \(\bf \cfrac{4x^2-4x-8}{2x+2}\qquad {\color{brown}{ x=-1}}\implies \cfrac{4x^2-4x-8}{2({\color{brown}{ -1}})+2}\implies \cfrac{4x^2-4x-8}{0}\)

  13. jdoe0001
    • one year ago
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    so -1,-6 is not a point on the line

  14. anonymous
    • one year ago
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    okay thanks :)

  15. jdoe0001
    • one year ago
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    yw

  16. anonymous
    • one year ago
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    If I ever have another question, I'll make sure to tag you :) Bye!!

  17. jdoe0001
    • one year ago
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    :)

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