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  1. y varies directly with x, and y = 7 when x = 2. What is the value of y when x = 5?

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2.y varies directly with x, and y = 5 when x = 4. What is the value of x when y = 8?

Verified Answer :

  1. y=mx where m is the constant

    7/2 = y/5
    2y = 35
    y = 35/2
    y = 17.5


    2. y=mx where m is the constant

    5=m4
    m= 5/4
    8=5/4 x
    x= 6.4

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