Question

Can anyone explain how this problem was solved?

http://prntscr.com/bs0gvn

Answer 1

A function is odd when its graph is symmetric with respect to the origin:
f(-x)= -f(x) (e.g. linear graph)

A function is even when its graph is symmetric with respect to the y-axis:
f(-x)=f(x) (e.g. graph of parabola)

Answer 2

Since that graph is not symmetric with respect to the origin nor to the y-axis, it is neither odd or even

Answer 3

Oh yes I see thank you :)

Answer 4

np :)