SOLUTION: I need help with everything that is about direct variation. example when they give you find x when y=50 when x=2 and y=200 I know for some you gotta use this form y1/(x1)2 = y1/(x2

Question 998806: I need help with everything that is about direct variation. example when they give you find x when y=50 when x=2 and y=200 I know for some you gotta use this form y1/(x1)2 = y1/(x2)2 and the other is just with out (2)
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
Your description makes no sense. Try again. Maybe pick a well described example.

Variation can be either direct or inverse. Usually a variable like k is chosen as a variation constant.

Using variables x and y, you MIGHT want to use how y is related to x.

y varies directly with x.
This can be translated, . If given a set of x & y values, you can find the value for k.

y varies inversely with x.
The translation can be, . If given a set of x & y values, you can find the value for k.

Be aware that sometimes alternative wording is used, but you become accustomed to interpreting it.
The word, "jointly" may be used in place of "directly".

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