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

Question

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

schrodinger · Answer

Is this a test question?

anonymous · Answer

no.

schrodinger · Answer

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

anonymous · Answer

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

anonymous · Answer

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

schrodinger · Answer

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

anonymous · Answer

Lol ....

schrodinger · Answer

?

anonymous · Answer

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

schrodinger · Answer

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.

schrodinger · Answer

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.)

schrodinger · Answer

That help?

schrodinger · Answer

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

anonymous · Answer

230?

schrodinger · Answer

Yep that's correct! :)