Since the second statement is sufficient to conclude. Statement 1 is inconclusive
How is the second statement sufficient? Is (r,s) on the line 2x + 3y = 6 or not?
Why is statement 1 inconclusive?
go for B,
1st- insuff. Could be YES/NO
Do not get confused over (r,s) it is the same as (x,y) but in diff. equation.
i think the best ways to solve for the fisrt st. is to draw lines
2x+3y=6------> y=2-(2/3)x and
3r+2s=6 OR 3x+2y=6--------->y=3-(3/2)x
On the graph you will see that these two lines cross in one point, when x (which is r)=2; and y (which is s)=1. All other points of 3r+2s=6 do not lie in region R. Thus inconslusive, cuz we do not know if the coordinates (2,1) or else.
Once we know exact coordinates of point, we can defenetely say if it is in region R or not. Any point has only one set of coordinates (x,y).