Mathematics
OpenStudy (anonymous):

Find the value of y for a given value of x, if y varies directly with x. If y = 240 when x = 48, what is y when x = 46? Answer –230 9.2 230 –9.2

OpenStudy (schrodinger):

Is this a test question?

OpenStudy (anonymous):

no.

OpenStudy (schrodinger):

What's with the a.c.b.d format?

OpenStudy (anonymous):

the ratio of y to x is 5 to 1 so for each value of x y=5x

OpenStudy (anonymous):

i do not know....@Schrodinger ....

OpenStudy (schrodinger):

Lol. Well you're posting this like a test question or like a homework problem. That's why i'm asking.

OpenStudy (anonymous):

Lol ....

OpenStudy (schrodinger):

?

OpenStudy (anonymous):

Its not a test question , but do you know how to answer it?

OpenStudy (schrodinger):

Yeah. A direct variation is like this: y = kx, in this situation, 240 = k(48) for the first one. In this situation, divide by 240 by 48 in order to find what k is. This should remain constant while x and y might change.

OpenStudy (schrodinger):

That said, plug it in for the same thing. Once you find the value of k, plug it into y = kx (with x being 46 this time rather than 48.) That should be your answer.)

OpenStudy (schrodinger):

That help?

OpenStudy (schrodinger):

*divide 240 by 48, not "divide by 240 by 48".

OpenStudy (anonymous):

230?

OpenStudy (schrodinger):

Yep that's correct! :)