Question 32513
a) Factor out sqrt s to get:
 (sqrt x)(sqrt x - 1)=0
Then either sqrt x=0, so x=0
OR sqrt(x)=-1=0, so sqrt(x)=1 and x=1
So the solutiontins are x=0 and x=1
b)y=x is a straight line thru points (0,0) and (1,1)
  y=sqrt x is a curve thru points (0,0) and (1,1), and (4,2) and etc.
Cheers,
Stan H.