Answer:
- see below for a graph
- arithmetic sequence
- common difference: 4
Step-by-step explanation:
Terms of a sequence are graphed with "x" values starting at 1 and increasing by 1 for each term. That means you're graphing the points (1, 4), (2, 8), (3, 12), (4, 16).
You will find the points lie on a straight line. That means the sequence is arithmetic.
The common difference is found by taking the difference of any pair of adjacent terms of an arithmetic sequence:
8 -4 = 4
12 -8 = 4
16 -12 = 4
The common difference is 4.
