Which pair of points graphed below have values that are opposites

Use δjkl and δmpn to determine whether don's claim is true or false. which of the following should don use to prove the triangles are similar? sss sas aas aa

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

The pair of coordinates that do not represent the point( 5,150’) is a. (5,-210) b. (5,210) c. (-5,330) d. (-5,-30)