The correct option is
D X is a function of A
If X is function of Y, then input = Y and output = X
Input |
Output |
Y = 750 |
X = 500 |
Y = 1250 |
X = 750 and 500 |
Y = 550 |
X = 1100 and 1200 |
We have more than one output for a particular input.
Hence, X is not a function of Y.
If Y is function of X, then input = X and output = Y
Input |
Output |
X = 500 |
Y = 750 and 1250 |
We have more than one output for a particular input.
Hence, Y is also not a function of X.
If A is function of X, then input = X and output = A
Input |
Output |
X = 500 |
A = 1 and 3 |
We have more than one output for a particular input.
Hence, A is not a function of X.
If X is function of A, then input = A and output = X
Input |
Output |
A = 1 |
X = 500 |
A = 2 |
X = 750 |
A = 3 |
X = 500 |
A = 4 |
X = 1100 |
A = 5 |
X = 1200 |
We have one output for a particular input.
Hence, X is a function of A.