Answer:

Explanation:
The slope of 
 is -3. When a line is perpendicular to another, it's slope will be the negative reciprocal of the other line. -3 could also be written as
 is -3. When a line is perpendicular to another, it's slope will be the negative reciprocal of the other line. -3 could also be written as 
 , and if you take the reciprocal, it would be
 , and if you take the reciprocal, it would be 
 , and the negative form of this (since a negative plus a negative is a positive) would be
 , and the negative form of this (since a negative plus a negative is a positive) would be 
 .
 .