How to alight selected verticasl along X or Y or Z

hello all as you see in the picture the selected verticals are in Gradient
I want them to alight on the x , how can it be done ?

Scale them along the axis with scale 0.
Short cut: s x 0 (or y or z as appropriate)

(not 100% sure that this is what you are asking for)

Here’s a video I did 3 years ago about that.

And the following Plugin aligns all vertices between the first and the last selected ones:

Could be useful for you as well :slight_smile:

Kind regards