No, x = 4 is not a function. I would describe x = 4 as the solution to an equation.
Chat with our AI personalities
y(x) = (4 - x)/4.
All of them
Yes.
It means the value of the function equals zero when the argument is 4. For example: f(x)=x-4 f(4)=4-4=0
2x-2/x^2+3x-4