The first graph that we have in this question is the graph that can be used to model the relationship that we have in this table.
How to model the graph in the table
In this table we can see that what we are having is a linear equation. First we have to check the slope that lies in any two of the points
This would be;
( 112.5- 75) / ( 3- 2) = 37.5 and
( 150 -112.50) / ( 4-3) = 37.50
We can have the equation of a straight line as: y = mx + c
y = 37.50x + c, x = 2
then c = 75 - 75 =0
When plotted on the graph we would have the first graph as the best solution. Hence option 1 is right
Option 1 best fits the graph
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