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Mathematics 26 Online
OpenStudy (anonymous):

If x varies directly as y, and x = 48 when y = 16, find x when y = 5.

mathslover (mathslover):

ok given : x directly proportional to y right ?

mathslover (mathslover):

@aussy123 please be active .. reply

OpenStudy (anonymous):

sorry my computer was having problems

mathslover (mathslover):

no problem .. i have to go may be @Calcmathlete help u

mathslover (mathslover):

and @UnkleRhaukus

OpenStudy (anonymous):

ok thx

OpenStudy (anonymous):

@mathslover before you go, isn't the order of x and y backwards?

mathslover (mathslover):

x:y=48:16=3:1 if 1=5 then 3=15 lolz is this process right ?

OpenStudy (anonymous):

well I was doing xy=k...but then I found myself repeating

OpenStudy (anonymous):

I'm going to go on a whim that since x and y have reversed positions, the formula is x = ky

OpenStudy (anonymous):

Solve for k using the first set of x and y. Then, use k and solve for x using the second y.

mathslover (mathslover):

http://answers.yahoo.com/question/index?qid=20100523170025AAP6nM6 http://www.algebra.com/algebra/homework/absolute-value/absolute-value.faq.question.147657.html include some good chances to do a similar type of questions ( solved ) that i did .leads to a right answer .. It is just a method declared by me for the obj. questions but to understand questions properly the process must be right

OpenStudy (anonymous):

mathslover your actually correct Im just confused with the concept

mathslover (mathslover):

x=ky 48=16k k=3 when y=5: x=3k = 3*5=15 this is the answer got it ?

OpenStudy (anonymous):

thats correct

mathslover (mathslover):

If x varies directly as y : then x = ky if y varies directly as x : then y = xk remember that also

mathslover (mathslover):

@Calcmathlete is my method correct now ?

OpenStudy (anonymous):

I see why It was so confusing for me because I was using xy=k

OpenStudy (anonymous):

I believe so. :)

mathslover (mathslover):

:) np @aussy123 just ask questions here but remember first try then ask as u did ! best of luck

OpenStudy (anonymous):

THANK YOU BOTH...this stuff was giving me a serious headache

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