hello

graphs of form y= x² +k

state the coordinates of vertex of each function :

a) y=x² and y= x²+2

b) y=x² and y= x² -2

c) y=x² and y= x² +4

d) y=x² and y= x²-4

another question

what transformation is needed to graph y=(x-h)² from y=x²

what transformaton is needed to graph y =(x-h)² +k

its urgent