how to draw page with minus x cordinate value to positive ?

> how to draw page with minus x cordinate value to positive ?

This is not possible in Inkscape: the origin of the coordinate system as seen in the GUI is not configurable by the user (it is always the lower left corner of the page).

Inkscape uses two coordinate systems:

For the GUI, the origin of the coordinate system is always the lower left corner of the page, with y-axis pointing upwards (like the first quadrant of the regular Cartesian Coordinate system)

The SVG coordinate system (as defined in the SVG 1.1 specification) differs:
The origin of the SVG coordinate system is the upper left corner of the page, with y-axis pointing downwards (like the fourth quadrant of the regular Cartesian Coordinate system).

Inkscape handles the conversion between the two systems internally. None of the two systems are configurable by the user, but there are feature requests filed to make the coordinate system as seen in the GUI configurable (or at least the same as defined in the SVG 1.1 specification).

Related feature requests (not implemented!):
Bug #170049 “Inverted ruler co-ordinate system”
Bug #170347 “ability to set coordinate origin”
Bug #171488 “User-defined coordinate system”

<off-topic>
It is unclear to me though in which context you have a need to enforce a different (or configurable) position of the coordinate system origin: based on your earlier questions, you seem to ask not as "regular" user but as developer who is modifying Inkscape's sources to implement custom features. The developers' mailing list might be a better place to ask about Inkscape's internals and ways to modify certain implementations or make use e.g. of existing functions to convert object coordinates between different coordinate systems (on the mailing list, please provide some kind of context of what you are trying to achieve - sometimes a solution might be achieved by different means).
</off-topic>