Question

Is y=5-x a direct variation and if so, what is the constant?

Answer 1

`y=5-x` is not a direct variation

Explanation:

One easy way to see this is to compare some solutions to this equation.

If `x=1 rarr y=4`

If `y` varied directly as `x`
`color(white)("XX")`doubling the value of `x` would double the value of `y`
but
`color(white)("XX")x=2 rarr y=3 != 2xx(4)`