( 4,20)is the correct answer
The equation of a straight line is given by:
y = mx + c
where m is the slope and c is the y-intercept.
From the given graph, the y-intercept is 1.
The slope of a straight line is given by:

Where

and

are two points on the line.
From the graph, (0, 1) and (14, 8) are two points on the line, thus:

Therefore, the equation representing the graph is