Answer:
m = -1/0
That is the only slope which cannot be defined by a number!
Answer:
Undefined
Step-by-step explanation:
The slope of any horizontal line is zero, and that is the case here, The line y=−1 has slope 0 so any line perpendicular to it will have undefined slope.. If you try to evaluate −1m , it involves division by 0 , which has undefined result.
