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meggy

  • 2 years ago

Which of the following relations is a function? A. { (1, 2), (1, 3), (1, 4), (1, 5) } B. { (1, 3), (2, 3), (4, 3), (9, 3) } C. { (5, 4), (-6, 5), (4, 5), (4, 0) } D. { (6, -1), (1, 4), (2, 3), (6, 1) }

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  1. fiedster23
    • 2 years ago
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    A function is when no input repeats which means no x coordinate can go to more than one y. So which one has a relation where the x doesn't repeat?

  2. fiedster23
    • 2 years ago
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    There's only one choice where this happens!

  3. meggy
    • 2 years ago
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    yep no clue what or how tto do this

  4. fiedster23
    • 2 years ago
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    In an ordered pair the first number is x and the second is y. So, if I have an ordered pair of (2,6). x is 2 and y is 6. Now look at your choices. the only relation that an x doesn't repeat is choice B, because your x's are: 1,2,4,9.

  5. jasonxx
    • 2 years ago
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    D, plot is on graph and you will get answer

  6. meggy
    • 2 years ago
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    so is the answer d or b

  7. meggy
    • 2 years ago
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    so is the answer d or b

  8. meggy
    • 2 years ago
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    so is the answer d or b

  9. fiedster23
    • 2 years ago
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    D is wrong It is B. I am a math teacher!

  10. fiedster23
    • 2 years ago
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    vertical line test also proves what I'm saying. If you plot the points and draw vertical lines through each point. Then each line should only go through one point. More than one point makes it NOT a function and if you graph D a vertical line would go through x at 6 twice which proves D is WRONG!

  11. jasonxx
    • 2 years ago
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    i dont know neither do i care yor a teacher or what, plot thes points on paer and get yor answer

  12. fiedster23
    • 2 years ago
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    Learn to plot points correctly and know what a function is.

  13. meggy
    • 2 years ago
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    well same thing for thois one { (2, 6), (3, 9), (4, 2), (3, 6) } B. { (2, 8), (3, 6), (2, 4), (0, 2) } C. { (3, -2), (4, 7), (-2, 5), (-4, 5) } D. { (4, 7), (-2, 5), (1, 3), (-2, 1) }

  14. jasonxx
    • 2 years ago
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    lol thanks thats wat ma concern is plot it first

  15. fiedster23
    • 2 years ago
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    Meggy if you ask your math teacher he will confirm what I'm saying! Answer is C on the second one. Same answer as above. Hope that helps.

  16. meggy
    • 2 years ago
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    oook and im online schooling i dont have teachers

  17. jasonxx
    • 2 years ago
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    ya can put yor questions here and everyone can help ya to figure out

  18. meggy
    • 2 years ago
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    Marty has a standard deck containing 52 cards. If Marty takes one card from the deck, what is the probability that he will select a king of hearts?

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