1.2. a. What is a function? b. A sequence is a function but what is its domain? c. Graph the function given by the sequence an = plotting the points in the xy plane by completing the table below and n+1 Output Input 1 2 3 4 0 2 3 4 5 6 7 8 d. Another way to think of a sequence is just from its output graphed on the real number line. With the same output you got in part (c), plot the sequence below. -10 -9 -8 -7-6-5-4-3-2-10 1 2 3 4 5 6 7 8 9 10