Answer:
im sorry i dont know but this is for a challenge
Step-by-step explanation:

Substitute x = 3 in any given equations. I will do in y = - x + 1

Therefore the answer is (3,-2)

This line is in the format
, where
is the slope.
A horizontal line has a slope of
.
A vertical line has an undefined slope.
A positive slope makes the line go upwards and to the right.
<em>A negative slope makes the line go downwards and to the right.</em>