Because we have a proportional relationship between y and x, that is equivalent to say that we have a linear relation or a linear function that describes the situation. Remember that a linear relationship is of the form
[tex]y\text{ = mx+b}[/tex]
where m is the slope of the line and b is the y-intercept. Now, to find the corresponding values in the table, we must first find the linear function that describes the situation.
Step 1: Find the slope. By definition we have that the slope of the line is:
[tex]m\text{ = }\frac{Y2-Y1}{X2-X1}[/tex]
where (X1,Y1) and (X2,Y2) are points on the graph, in our case the table data
