The equation of the line is 
Explanation:
Given that the set of ordered pairs is (0,0), (2,1), (4,2), (6,3)
We need to determine the equation of the line.
<u>Slope:</u>
The slope of the line can be determined using the formula,

Let us substitute any two coordinates in the formula.
Thus, substituting the coordinates (2,1) and (6,3) in the above formula, we have,



Thus, the slope of the line is 
<u>Equation of the line:</u>
The equation of the line can be determined using the formula,

Let us substitute any one of the coordinates and the slope in the above formula.
Hence, substituting
and the coordinate (0,0), we get,



Hence, the equation of the line is 