Final answer:
Miranda's and Jock's number lines are both horizontal lines at different y-coordinates.
Step-by-step explanation:
a) Miranda's Number Line:
This is a horizontal line at the y-coordinate of 2. It starts at the point (0,2) and ends at the point (3,2).
b) Jock's Number Line:
This is a horizontal line at the y-coordinate of 3. It starts at the point (0,3) and ends at the point (3,3).
c) Both a and b: