Which graph represents the sequence: 1, 2.5, 4, 5.5, 7, draw a graph representing the sequence.

Attachment

Step-by-step explanation:

Given: Sequence of number:- 1, 2.5, 4, 5.5, 7, ....

First we find the formula of the sequence

First term, a₁=1

Second term, a₂=2.5

Common difference, d = a₂ - a₁

                                   d = 2.5 - 1 = 1.5

Formula:

So, function of the sequence will be

This is equation of straight line. Now, we draw the graph of function.

Make table of n and f(n)

 n :   1    2     3     4      5      

f(n):  1    2.5   4    5.5    7

Plot the points on graph. Please see attachment for graph.

Domain of function: n≥1

Because sequence is start from 1.