Question 57072
Find the slope of any line perpendicular to the line through points (0, 5) and
(-3, -4).
First we need to find the slope between these two points:
The slope formula is what you use when you are given two points (x1,y1) and (x2,y2).  {{{highlight(m=(y2-y1)/(x2-x1))}}}.  (m stands for slope)
{{{m=(-4-5)/(-3-0)}}}
{{{m=-9/-3}}}
{{{m=3/1}}} or m=3
Perpendicular lines have slopes that are negative reciprocals of each other.  (change the sign and flip the slope upsidedown.)
The slope of any line perpendicular to the line through those points is:
{{{highlight(m=-1/3)}}}
Happy Calculating!!!