Keyframe bezier not synced

I have two properties keyframed, call em A & B. They both go form point 1 to point 2 from 0 to 90, but B also goes from point 2 to piont 3, from 90 to 130. But as a result of this, property B has a different speed than A over the trajectory 1 - 2, and thus isn’t in sync.

How can I fix this? I want both properties to have the same speed from piont 1 to piont 2.

I hope this isn’t too confusing