(4x+y-z)
It's a "plane"
Domain=R
Range=R(all real numbers)
Parity=Odd
Root=z = 4 x+y
Derivative=(d)/(dx)(4 x+y-z) = 4
Indefinite Integral= (4 x+y-z) dx = 2 x^2+x y-x z+constant
It is not anything except an expression :)
