Input a, b, c and d, points to output x, y and z
is this a function? why
To determine if this is a function, we need to evaluate whether each input (combination of values for a, b, c, and d) corresponds to a unique output (combination of values for x, y, and z).
If there is a possibility that different inputs could lead to the same output, then it would not be a function. On the other hand, if each input always maps to a unique output, then it is a function.
The given information is not sufficient to determine if this is a function as it does not specify the relationship between the input points (a, b, c, and d) and the output points (x, y, and z).
Therefore, without additional information or constraints, we cannot determine if this is a function.