Question

Which one is x1, y1 and which is x2, y2?
(7, 2) and (15,8)

Answer 1

X1 = 7

Y1 = 2

X2 = 15

Y2 = 8

Answer 2

The values are always interpreted as (x1, y1) and (x2, y2) in order from left to right, so in this case, (7,2) are (x1, y1) and (15, 8) are (x2, y2)