Question

How do you name the Constant of Variation in the equation, `y = 3x`?

Answer 1

constant of variation `=3`

Explanation:

If `y` varies directly as `x`
then the constant of variation is the value of `c` in the equation
`color(white)("XXX")y/x=c`
or, equivalently
`color(white)("XXX")y=cx`

Given `y=3x`
it follows that the constant of variation is `3`