No. For a set of data to be points produced by a function, each value of x can produce only one value for y. Otherwise it fails what is called the "vertical line test". The definition of a function requires that only one value of y can exist or for one value of x, or in other words one input can produce only one output.
In this case you have points (1,-2) and (1, -3), obviously -2 does not equal -3 and so there are two outputs, y, for one single input, x=1. Therefore the data can not be from a function.
