Calculate slopes between two points

[Rinn]

Hi, 

I am a beginner to DAX and I am trying to calculate the slopes for each two points of a curve :

(Index = order of X for each User)

Users	Index	X	Y	SLOPE (calculated)
A	1	0	4
A	2	0,5	23	38
A	3	1	40	34
A	4	1,5	39	-2
A	5	2	22	-34
B	1	0	9
B	2	0,5	26	34
B	3	1	54	56
B	4	1,5	42	-24
B	5	2	22	-40
C	1	0	13
C	2	0,5	113	200
C	3	1	163	100
C	4	1,5	75	-176
C	5	2	28	-94

Can you help me pls ?

Best Regards.

[lbendlin · Accepted solution]

Here's my version (as a measure - could be a column too, I guess)