Forgot to add this question:

Question

1. Describe the graph represented by the table:
x 1 2 3 4
y 5 5 5 5

Ans: The actual graph would be a vertical line at ordered pairs (1,5), (2,5), (3,5), (4,5), and (5,). Is this right?

Answer 1

nope
http://www.wolframalpha.com/input/?i=plot+%281%2C5%29%2C+%282%2C5%29%2C+%283%2C5%29%2C+%284%2C5%29

notice all their y values are the same, y = 5

so it is a horizontal line

Answer 2

Right, it should be horizontal.... got my lines mixed up.