Choose 5 ordered pairs whose first component is the opposite of the second component. Plot these points and connect them. What kind of figure do you get? In what quadrants does the figure lie?

Answer 1

Did you try to do this with a few points?
e.g.
(6,3) ----> (-6,3)
(-2,5) ---> (2,5)
..... try some more, then plot them
What did you notice?

Answer 2

or, how about
(2,-2)
(-2,2)
(1,-1)
(-1,1)