On a coordinate plane, points (1, 11) and (2.5, 27.5) are plotted. Use the graph or table to identify the value that makes this relationship proportional. A 2-column table with 3 rows. Column 1 is labeled Days (x) with entries 1, 2.5, 3. Column 2 is labeled Dollars (y) with entries 11, 27.5, a. a =