Variable y varies directly with variable x, and y = 5 when x = 8.

What is the value of x when y = 15?

Question

Variable y varies directly with variable x, and y = 5 when x = 8.  

 

What is the value of x when y = 15?

rayman5766 · Answer

@iiForeverLost alright smart guys lets see if you can do that again

anonymous · Answer

Ok

anonymous · Answer

Like for example the last problem was like this: If they vary directly then y = kx. Plug in the two values to find k. 

y = kx 

6 = k(20) 

k = 6/20 = 3/10 = 0.3

anonymous · Answer

If im Correct So What is your Y Do you know?

anonymous · Answer

Ok.. It Would be kx Like last Time So Lets Pretend 6 Is x ok? Now What does k = and Then You Divide that fraction  By 2 Then Covert To a decimal

rayman5766 · Answer

yea don't think I am stupid but my teacher gave me this and I was late for class so I missed most of what is going  so if I don I hope you understand

anonymous · Answer

Mhm Well Basicly you do that top your Probolem again just diffrnent numbers Ok?

rayman5766 · Answer

pluse I am not good with word problems be like uhh

rayman5766 · Answer

also I did not mean to e at plus also why did you give me a medal I dint solve it yet

anonymous · Answer

Ok.. The answer should be about 8.33333333333(Ect)

rayman5766 · Answer

so bascule   8.3

anonymous · Answer

Yea