How to change the multitasking view in iOS 9?
No, not without jailbreaking.

If you're willing to jailbreak your phone, there is a tweak called SwitcherTweak (no idea how they came up with the name) which lets you select which direction the app switcher goes in.

(Note: if you have updated to iOS 9.1, there's no jailbreak utility currently available for it and there is no way to downgrade.)