Answer:
Substitute y with y-9.
Step-by-step explanation:
To shift the graph 9 units upward you have to substitute the y with y-9.
Suppose the origin of the function on the graph is (0,0).To shift the function upward by 9 units you have to make the origin (0,9). So to do this you have substitute y with y-9.
(x,y)=(0,0)
So finding the origin will be
(x,y-9)=(0,0)
x=0.
y-9=0
y=9
Now our y coordinate is 9 hence the graph is shifted 9 units upwards.
