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29 October, 04:03

Y is inversely proportional to x

when y=7, x=9

a) work out an equation connecting y and x

b) work out the value of y when x=21

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Answers (1)
  1. 29 October, 06:19
    0
    A. y=k/x b. 7=k/9 using equation y=k/x cross multiply k=63 sub for k=63 and x=21 in the equation y=k/x y=61/21

    y=3
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