Question

important formulas of direct and inverse proportion​

Answer 1

Answer:

For direct variation use the equation y=kx,

where k is a constant of proportionality.

For inverse variation use the equation y=k/x

agin where k is the constant of proportionality.

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Answer 2

Step-by-step explanation:

for direct variation

y=kx or y/x=k

k is constant of variation.

y/x is equation of variation.

for inverse variation

k=xy

k is constant of variation

k=xy is equation of variation.