Explanation:
a very strange question. maybe you lost some part of the original question ?
because as it is written there can be only one answer :
the distance between 2 points always means the length of the direct connection.
and that would be based on Pythagoras for the right-angled triangle that is created by the direct connection between the points (the Hypotenuse) and the circumstances differences in x and in y direction (as the legs of the triangle) :
distance² = (4-9)² + (3-15)² = 25 + 144 = 169
distance = 13 units.
but if the question is about the distances in x and y direction, then we get for the distance in x direction
|4-9| = 5 units
and for the distance in y direction
|3-15| = 12 units