Question

line a is perpindicular to line b if the slope of line a is 1/8 what is the sllope of line b?

Answer 1

Since the slope would be perpendicular, you would reciprocate and change the sign of the current slope.

Let's start by reciprocating the slope:

1/8 -> 8/1

Now change the sign:

8/1 -> -8/1

Note:

-8/1 also means -8

Answer

The slope of line b would be -8