If Y varies directly with x, then y=1/2 when x=-2. What is the value of x when y=-4?

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If Y varies directly with x, then y=1/2 when x=-2. What is the value of x when y=-4?

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Ngọc Diệp 6 months 2021-08-07T15:50:08+00:00 1 Answers 1 views 0

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    2021-08-07T15:51:32+00:00

    Answer:

    x = -16

    Step-by-step explanation:

    y = kx

    1/2 = -2k

    k = 1/4

    -4 = 1/4x

    x = 4(-4)

    x = -16

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )