Question

50 POINTS! + BRAINLIEST! PLEASE HELP

Answer 1

Answer: yes it is

Step-by-step explanation: put into a graph and it will become clear

Answer 2

slope = rise over run = y/x

A (-1,3) slope = 3/-1 = -3

B (1,2) slope = 2/1 = 2

C (-3,-1) slope = -1/-3 = 1/3

2 lines need to be negative reciprocals in order to be a right triangle

negative reciprocal of -3 is 1/3

 so this is a right triangle