Question 601412
The slope of a line is 2/3 . What is the slope of a line that is perpendicular to this line?
a) -3/2
b) -2/3
c) 2/3
d) 3/2
.
Lines are perpendicular if their slopes are "negative reciprocal".
That is, if we multiply the two slopes together the result is -1
.
Answer is a) -3/2
because
(-3/2)(2/3) = -1