For each set of graphs:

i. Sketch the graphs on the same axes.

ii. Give the coordinates of any points of intersection with the axes.

a. y = e^x, y = e^x + 1 and y = e^x+1

b. y = e^x, y = 2e^x and y = e^2x

c. y = e^x, y = e^x − 3 and y = e^x−3