Answer:
yes
Step-by-step explanation:
no
The answer is 9, you have to add them together which equals 9.
The answer is d) 14. Attached is a screenshot of how to do this on a graph. Graph the given point (5,12). Count out your slope on either side until you reach your given y value (6).

Both of the functions are linear.
is constant.
However we are required to determine the range of 

So the only possible solution that such notation gives is -2374 so therefore the answer in terms of range is 
Hope this helps.
r3t40