book Maths Puzzle Numerical Ability

i would like some problems that would accure to the problems of the cymmetry of Algebra

Read Solution (Total 0)

book Other Question

Im trying to do my homework, but I dont understand it.

It says y=x(squared)+1

and to find the
Y-intercept:
X-Intercept:
Vertex:
axus of symmetry:

Thanks. f(x)=x/(x+1)
then
f(f(x))=