SOLUTION: the variables x and y vary directly.use the given values to write an equation that relates x and y x=5,y=40 I have no clue how to do it

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Question 138204: the variables x and y vary directly.use the given values to write an equation that relates x and y
x=5,y=40
I have no clue how to do it
Found 2 solutions by Earlsdon, Alyssa Maserang:
Answer by Earlsdon(6294) (Show Source):
You can put this solution on YOUR website!
To express the relationship of x and y, you write the equation of variation:
This says that x varies directly with y. The k is called the constant of variation and to find its value, you will need to be given a value of x and the corresponding value of y. Your problem provides these values:
x = 5, and y = 40.
So you substitute these into the equation and solve for k.
Divide both sides by 40.
Simplify the fraction.
This is the value of the constant of variation, k.
Now you can write the final equation of variation:

Answer by Alyssa Maserang(9) (Show Source):
You can put this solution on YOUR website!