Is y minus x equals 4 direct variation

No

Step-by-step explanation:

y - x = 4 can be rewritten as

y = x + 4

This is the equation of a line, so this equation is linear.

For an equation to be direct variation, it must have the form

y = kx, where k is a number called the constant of proportionality.

If you rewrite y = x + 4 as y = 1x + 4, you still have the 4 there that cannot be in a direct variation equation.

No,