If the four vertices of a rhombus taken in order are (0, 0), (a, –3), (7, b) and (3, 4), then (b, a) is equal to

If the four vertices of a rhombus taken in order are (0, 0), (a, –3)

1.	If the four vertices of a rhombus taken in order are (0, 0), (a, –3), (7, b) and (3, 4), then (b, a) is equal to
Answer» If the four vertices of a rhombus taken in order are (0, 0), (a, –3), (7, b) and (3, 4), then (b, a) is equal to