Answer:
A is the correct option
Step-by-step explanation:
By using the definition of a function, we will decide which one is function.
A special relationship where each input has a single output.
For each value of x we must have one value of y
In option A each x value maps out to exactly one y value
For x = 7, y = 5
For x = -6, y = 0
For x = 2, y = 3
In option B, -6 as x is giving values of 0 and -2 as y which disqualifies it as a function
In option C, it is not given in ordered pair form of x and y. The relation is not given at all
In option D, for x = 7, y has values of 5 and 3. Which again is not qualifying the definition of a function.
