Thanks for sharing, although this is very basic considering in high school I did study it so i was able to solve it but I am surprised considering I have done the 24-25 OG (some easy questions are left though) and I didn't face a single question or maybe it was hidden in plain sight didn't look like coordinate geometry one like this. Although I am yet to face it in the mocks, and I have given all the official mocks atleast once.
But one thing I have judged is in some DI questions, graph lines are given and there you need to calculate slope to determine rate of change or line would be given in the form of variable and having basic knowledge of coordinate geometry is required to determine how to use it. Plus positive corelation and negative corelation questions are prevelant in MSR's and Tables which indeed is a concept from coordinate geometry.
GmatKnightTutor