ANSWER
The correct answer is
EXPLANATION
One of the best ways to approach this question is to find the equation of the line that represent the values in the table.
So we need the slope. We can find the slope using any two pairs of points say
The slope is given by the formula,
This implies that,
We see from the table that the y-intercept is
Hence the equation is
where m=-1.25 is the slope and c=3.5 is the y-intercept.
We substitute to obtain,
or
This is the only equation that represents the values in the table.
The answer is D.