If y varies directly with x, given x = 4 and y = 8. What is the value of k (constant of proportionality)?

Question

If y varies directly with x, given x = 4 and y = 8. What is the value of k (constant of proportionality)?

in progress 0
Mộc Miên 3 months 2021-08-19T05:10:30+00:00 1 Answers 1 views 0

Answers ( )

    0
    2021-08-19T05:11:44+00:00

    Answer:

    2

    Step-by-step explanation:

    If y y varies directly with x, this is expressed as;

    y ∝ x

    y = kx

    k is the constant of proportionality;

    Given

    x = 4 and y = 8

    Substitute;

    8 = 4k

    4k = 8

    k = 8/4

    k = 2

    Hence the constant of proportionality k is 2

Leave an answer

Browse

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