Answer:

Step-by-step explanation:
<u>Step 1: Determine the unit rate</u>



<u>Step 2: Determine the amount of gasoline used for 216 miles</u>


Answer: 
ANSWER
The relation is not a function.
EXPLANATION
The relation is not a function because we have an x-coordinate mapping on to more than one y-coordinate.
This occurs at x=1.
The ordered pairs (1,1) and (1,3) disqualify the relation from being a function.
Hence the relation is not a function.
Answer:
Yes! it makes me do 20 characters but yes
Answer:
non linear
Step-by-step explanation:
the graph is showing more of a parabola than a linear line