if x,y are in inverse proportion then complete the following table x= 42 y=-15 , x=30 y==– ​

Question

if x,y are in inverse proportion then complete the following table x= 42 y=-15 , x=30 y=—–

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Gia Bảo 2 days 2021-07-22T21:51:51+00:00 1 Answers 0 views 0

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    2021-07-22T21:53:44+00:00

    Answer:

    when x=30, y = -21

    Step-by-step explanation:

    x = k/y

    x = 42 y = -15

    x = k/y

    42 = k/-15

    Cross product

    42 * -15 = k

    -630 = k

    k = – 630

    Find y when x=30

    x = k/y

    30 = -630/y

    Cross product

    30 * y = – 630

    30y = – 630

    y = – 630/30

    y = -21

    when x=30, y = -21

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