First find the slope of the line
.
Rewrite the line in slope-intercept form y = mx + b, where m is slope and b is y-intercept.
\
(Add 3y to each side)
(Simplify)
(Divide each side by 3) \ \
(Simplify)
Compare the equation with slope-intercept form and find the slope of the line.
\ =
.
If two lines are perpendicular, the slope (m1) of one line is opposite reciprocal of the second line slope (m2). It can be represented as,
.
Slope of the line perpendicular to given line is 
So, slope of the new line =
.
\
Graph the line using given point and slope.
\1. Draw a coordinate plane.
\2. Plot the given point (-1, 5).
\3. Find the next point using
. Start at (-1, 5) and go down 3 units and 5 units right, then mark a dot and label it.
4. Draw a line through these points.
\\
_slope_minus%203by5.gif\")
Graph of the line passing through the point (-1, 5) and slope
is
_slope_minus%203by5.gif\")