Variable y varies directly with variable x, and y = 9 when x = 5.

What is the constant of variation in decimal form?
I got 1.8 @eta

Question

Variable y varies directly with variable x, and y = 9 when x = 5.

 

What is the constant of variation in decimal form?
I got 1.8 @eta

anonymous · Answer

If y varies directly with x, then what will be the equation?

anonymous · Answer

See, I can tell you one or two, not whole of your questions.
It is just the same as we have done yesterday..

anonymous · Answer

If you understand that problem, then you must be able to solve this one..

anonymous · Answer

im so confused im bad at math so I came here to ask how to find the answer

anonymous · Answer

And if you have solved it then you must have confidence on your abilities..

anonymous · Answer

Yes, $1.8$ is right..

Good.. :)

anonymous · Answer

are we dividing something on both sides

anonymous · Answer

oh ok man I was confused I wasn't sure but thanks

anonymous · Answer

See, understand it properly:
$y$ directly proportional to $x$ means : $ y = kx$, if x increases then y also increases, and if decreases then y also decreases..

anonymous · Answer

$$9 = 5x$$

anonymous · Answer

Divide both the sides by $5$ and there you go..