Hello, Joel.
I wish I had a coordinate plane uploaded here so I could show you.
A= (8,1) first quadrant (x and y both positive)
D= (3,−2) fourth q. (x positive, y negative)
B= (−6,−8) third q. (they both negative)
E= (−4,9) second q. (x negative, y positive)
C= (−9,0)none, because the point is on the x-axis
hope that helps