Answer:
it is 390
Step-by-step explanation:
Answer:
Wait there is no exercise 1-5 number line maybe its like this? 1-2-3-4-5
^2
Step-by-step explanation:
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
