I dont know what to do?
The variables x and y vary directly. Use
the given values to write an equation that relates x and y.
x = 5, y = 25

Question

I dont know what to do?
    The variables x and y vary directly. Use 
    the given values to write an equation that relates x and y.
    x = 5, y = 25

theopenstudyowl · Answer

@iYuko

iyuko · Answer

$$x=ky$$

iyuko · Answer

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, y=25

iyuko · Answer

So you substitute these into the equation and solve for k.

iyuko · Answer

Tell me, what will this equation look like?

anonymous · Answer

So  5= 25k?

iyuko · Answer

5=k25

iyuko · Answer

What do you do since k is being multiplied by 25?

anonymous · Answer

OK, so then I will just solve for K?
divide 25 by 5?