Since the ordinate or the y-coordinate is −4, we now look for the points lying on the horizontal line passing through y=−4 or the points which have y - coordinate =−4.
That is, the points will lie in the IIIrd or IVth quadrants.
Observing the graph, only the point D has the y - coordinate =−4.
Also, the x-coordinate of D is 2, then D=(2,−4)
Hence, the answer is D(2,−4).