If y varies directly with x, there is a constant k such that

y = k*x

y = k*x

If y varies directly with x, there is a constant k such that

y = k*x

y = k*x

The distance that a body falls from rest varies directly as the square of the time of the fall.

Graph this

Graph this

You write the equation, so start out thinking of the direct variation formula

y=kx

if you are given an order pair

ex) (5,3)

the equation would look like this

3=k(5)

k=3/5

y=3/5x

done....

y=kx

if you are given an order pair

ex) (5,3)

the equation would look like this

3=k(5)

k=3/5

y=3/5x

done....

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