If y varies directly with x, and y =500 when x= 200, find the constant of variation k.?

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2007-08-26 05:51:48 · 3 answers · asked by texan3715 1 in Science & Mathematics ➔ Mathematics

y = k x
500 = 200 k
k = 5 / 2

2007-08-26 07:15:59 · answer #1 · answered by Como 7 · 2⤊ 0⤋

let y=kx
whenx=200,y=500
500=200k
k=5/2=2.5 ANS.

2007-08-26 05:56:10 · answer #2 · answered by Anonymous · 0⤊ 0⤋

y = kx

500 = k(200)
k = 2.5

2007-08-26 05:55:51 · answer #3 · answered by 7 · 0⤊ 0⤋