katlin95
If y varies directly as x, find the constant of variation if y = 12 when x = 1/3
A. 36
B. 4
C. 6
D. 12



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katlin95
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@jim_thompson5910 a little confused on this?

jim_thompson5910
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y = kx .. because "y varies directly as x"
12 = k*(1/3) ... plug in the given values
solve for k

katlin95
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I got 4


jim_thompson5910
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you do NOT do 12*(1/3) or 12/3

katlin95
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no its A sorry lol

jim_thompson5910
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you have multiplication of 1/3 on the right side
so you to undo this, you multiply both sides by 3

jim_thompson5910
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yes it's 36