Answer:
negative
Explanation:
as x increases, y decreases so it's negative.
you can easily tell by inspection, the slope is downward from left to right so it is negative.
to prove
two points on the line (0,0) and (2,-1)
slope is rise/run - change in y/change in x
[0-(-1)]/(0-2)
=1/-2
=-1/2
the coefficient is negative so the slope is negative
a positive slope would slope upwards from left to right
a slope of 0 would be horizontal
an undefined slope would be vertical