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celinegirl

  • one year ago

Is the following relation a function? (math question)

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  1. celinegirl
    • one year ago
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  2. celinegirl
    • one year ago
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    Yes No

  3. celinegirl
    • one year ago
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    @PrincessHush

  4. Hero
    • one year ago
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    Does it pass the vertical line test?

  5. Hero
    • one year ago
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    @celinegirl

  6. celinegirl
    • one year ago
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    @chris00 oh okay

  7. anonymous
    • one year ago
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    if we use the vertical line test, |dw:1444447025149:dw| etc, we see that the relation is not a function since it must intersect a x-coordinate at only one y-coordinate

  8. celinegirl
    • one year ago
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    @chris00 hm.. I dont understand

  9. anonymous
    • one year ago
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    if we put a vertical line at say x=3 , then the line intersects two points.

  10. anonymous
    • one year ago
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    correct?

  11. celinegirl
    • one year ago
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    @chris00 yeah

  12. anonymous
    • one year ago
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    since the vertical line intersects the relation twice, then it is not a function. perhaps look at this link http://www.regentsprep.org/regents/math/algtrig/ATP5/LFunction.htm

  13. anonymous
    • one year ago
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    Function: A function is a set of ordered pairs in which each x-element has only ONE y-element associated with it.

  14. anonymous
    • one year ago
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    at x=2, we see that it can take two points. the positive y value and the negative y value. right?

  15. celinegirl
    • one year ago
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    @chris00 right

  16. anonymous
    • one year ago
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    So this means that this relation is not a function.

  17. celinegirl
    • one year ago
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    @chris00 ah okay! I get it now.

  18. anonymous
    • one year ago
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    : )

  19. celinegirl
    • one year ago
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    @chris00 thank you!(:

  20. anonymous
    • one year ago
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    medal and fan if you need my assistance again : )

  21. celinegirl
    • one year ago
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    @chris00 of course (: thanks

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