Answers

2015-09-29T17:53:01+08:00
Direct variation-> y=kx
inverse " -> y= k
x
combined-
joint
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2015-09-30T17:55:51+08:00


if y VARIES DIRECTLY as x ; y=kx

If y is PROPORTIONAL to x ; k=y/x

if y VARIES INVERSELY as x ; y=k/x

if y VARIES JOINTLY as x y=kxz

k isa called the constant of variation

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