The correct option is A a=290,b=1555
It is already given that "x" and "y" are in a proportional relationship.
So, value of yx = Constant
Observing the values from the table, we get:
2501255=2701355=10
So, Output = 10×Input -----(1)
Therefore, the value of "a" will be:
1455×10=290=a
Equation 1 can also written as input = Output10
Therefore, the value of "b" will be:
31010=1555=b
∴ "a" is 290 and "b" is 1555.