My take on Scale:
X-axis(I/V): (1.13-.47)/5*75=9.9mm for 1 unit=>We can use 5mm as 1 unit.
Y-Axis(V/V)1.7-.7)/5*60=12mm for 1 unit=> We can use 10mm as 1 unit as matter of convenience.
this is what I was looking for (Y) but kinda complicated
what you are studying bro?
he don't need to do that much work for simple problem... he might get confused....
I'm studying physics, Cambridge iGCSE (O level or gcse intl alternative)