Identify the constant of proportionality from the table.
X Y
3 21
5 35
6 42
8 56

O A. 3
O B. 21
C. 1/7
D. 7​

Identify the constant of proportionality from the table X Y 3 21 5 35 6 42 8 56 O A 3 O B 21 C 17 D 7 class=