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anonymous

  • one year ago

help The value of y varies directly with the value of x, and y = –21 when x = 3. Which equations represent the relationship between y and x? Choose exactly two answers that are correct. A. B. C. D.

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  1. MrNood
    • one year ago
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    'varies directly with' means y= constant times x or in equation form y=kx

  2. anonymous
    • one year ago
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    |dw:1434050365711:dw|

  3. MrNood
    • one year ago
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    you need to re-arrange th eanswers , and find those which are equivalent to y- kx (where k is any constant number)

  4. anonymous
    • one year ago
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    i dont get it

  5. MrNood
    • one year ago
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    for instance look at B \[\frac{ y }{ x }= -7\] re write that as y= ????

  6. anonymous
    • one year ago
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    y = -7x

  7. MrNood
    • one year ago
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    ok good so is that in th esma format as y = kx (where k is any number?) IF so it is one of the answers

  8. anonymous
    • one year ago
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    oh

  9. anonymous
    • one year ago
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    A and B the answers right?

  10. anonymous
    • one year ago
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    @MrNood are you there

  11. MrNood
    • one year ago
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    lost connection you need to find all the answers which are equivalent to y = kx if oyu are happy with A & B the n go with it

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