Answer:
a. 9
b. The slope represents the cost for every new DVD
c. 6
d. The song represents the base price, or the price that it would cost for 0 DVDs
e. y = 9x + 6
here's a graph of what the line would look like
Answer:

Step-by-step explanation:

<span>Intersecting arcs are created and connected.</span>
The measures of the interior angles together would be 40 degrees, but separate, they would be 20 degrees.
Hi!
The answer is no, because the y values have no pattern, nor are they proportional with the x values.
Hope this helps! :)
-Peredhel