Answer:
The graph is a function
Explanation:
-For every input (x) there is only one output value (y)
Since the function does not have two of the same x values for several inputs, its considered a function. If the x values do not repeat values, or if you graph the function and it does not cross on more than one point, it is also considered a function.
Ex.
X: 2, 4, 7 , 2, 5 This is not a function. More than one input for each output.
Y: 1, 2, 4, -3, 7
Ex.
X: 5, 6, -5, 8 this is a function. Exactly one input for every output.
Y: 1, 4, 5, 9