Does this graph show a linear, quadratic or Exponential function? Justify your answer.. PLEASE HELP

As the coordinate space is 1:1 it obviously isn't linear (not a straight line segment)

Rap

Using the starting point (0,1) I'd say it's more likely to be exponential.

Why? If y=k^x where k is any real constant---then for x=0 then y=k^0=1

Rap

It is the graph of the function x -> x^2/4 +1, so clearly quadratic.