Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar. The table shows a proportional relationship between x and y. x 1 2 3 y 3 6 9

If this is a proportional relationship, then the graph is that of a straight line which has no offset (no y-intercept other than (0,0)).

Note that 3*1 = 3; 3*2 = 6; and 3*3 = 9. Therefore, the relationship / function is

y = 3x.

What is the question?