x>0 so x is positive and y>0 so y is also positive. When you multiply two positive numbers you always get a positive number, so the product of x and y must be positive, or greater than 0. xy>0 - it must be true xy<0 - it can't be true Also when you divide a positive number by a positive number you always get a positive number, so the quotient of x and y must be positive. x/y<0 - it can't be true D and E can be true, but don't have to. It depends on the values of x and y. If x>y, then x-y>0 is true and x-y<0 isn't true; if x<y, then x-y>0 isn't true and x-y<0 is true.
Well, you have the radius and the center already. So all you have to do is graph the center point, then count from that center point out 5 units, then draw the circle.
