How does +1 make the prabola go to the left which is the negative axis and how the hell does it go -

[smoky badger]

ok, let's start with
$x-1=a$

[vast wren]

Waleed Al-Thqfi

[smoky badger]

a is the original point in the original function
then
$x=a+1$
whichs means x will move all the original points to the postive side

[vast wren]

Waleed Al-Thqfi

[smoky badger]

the same thing with
$x+1=a$
, and etc...

[vast wren]

Waleed Al-Thqfi