Question

-x+1, x<0}=
-2, x=0}=f(x)
x^2-, x>0}=

a f(4)=7
b f(-1)=0
c f(1)=0
d f(-2)=0

Answer 1

So \(f(x) = \begin{cases}-x+1,&x<0\\-2,&x=0\\x^2,&x>0\end{cases}\) , right?

Answer 2

yes

Answer 3

werid, nothing is right to me

Answer 4

you can pick more than 1