Function graph, finding equation?

Question

Does anyone know how to find the equation of this graph (link below) in order to do part A-D? Or if finding the equation is not necessary then how do you do parts A-D?

http://img135.imageshack.us/img135/6133/functionqo6.png

Answer 1

No need to find equation. The graphs of functions a, b, c and d are here:

http://tinyurl.com/4u9wob

http://tinyurl.com/43rfhc

http://tinyurl.com/4vq9x8

http://tinyurl.com/3ryo2l

All graphs are red. The function f(x) is blue.



-