The table shows a proportional relationship between x and y. dimitrios and katerina have to complete the table. katerina incorrectly says the ratio y/x is 1/10.

a) complete the table.
x- 3 5 7 9
y- 30, 50, 70, 90
(empty spaces here for each)

b) what error did katerina likely made?
a. she found and simplified x * y.
b. she found and simplified x / y.
c. she found and simplified x - y.
d. she found and simplified x + y.