1.what is the range of f(x)=2.

2. How to graph f(x)=5x.
3. How to graph f(x)=-3x^2-1.
4. How to graph f(x)=-2\sqrt{x}.
5. How do we graph -4/x/.
6.It is curved at 1 on the graph. How to solve f(x)=2.