You mean coordinates? They can be found out by substituting a number in the equation. After substituting several numbers, we get: x=4;y=5 x=-4;y=7 x=-2;y=7.5
There is no difference, 6rs-(-2rs) if you get rid of the parenthesis you are left with 6rs- -2rs and two negatives make a positive therefore the answer will become 8rs... I hope this helps :)
