Posted by gavyn on Wednesday, January 14, 2009 at 8:59pm.
i have a homework assignment i do not know how to do. i was out sick so i have not learned this. hear is the question......y varies directly as x. find the constant of variation and write an equation for the direct variation.
question 1: y=15 when x=5

8th grade  bobpursley, Wednesday, January 14, 2009 at 9:03pm
direct variation:
y= kx where k is the constant of variation.
15=k*3 find k.

8th grade  John, Thursday, January 15, 2009 at 1:26pm
y=kx
y=15
x=5
Shouldn't it be 15=k*5?

8th grade  Anonymous, Monday, October 22, 2012 at 7:37pm
The anwser is y=3x
Becasue all you doing is divding 15 dy 5 to get k
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