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Jceg1030go
Answered

How do you solve for a direct proportion?

I just really need it.. And please give an example..
Thank you

Sagot :

Janinesalabie354go

Answer:

If you are said x and y are directly proportional you just have to write the equation y=kx,

find the k.

In this case, y=30 and x=6, so 30=k*5<=> k=30/6=5. After knowing k you only have to replace the given value in the right place. (if y is directly proportional to x, this means x is also directly proportional to y.

Answer:

When it is a direct proportion, multiplying or dividing one number with a certain constant will multiply or divide the other number with the same constant.

Example:

6:4 = x:12

Solve for x (direct proportion).

4 was multiplied by 3 to get 16, right?

3 is your proportion constant. Multiply 6 by 3 too.

6:4 = 18:12

x is equal to 18.

Hope this helps. :)

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