SOLUTION

1
Determine whether lines are parallel or
perpendicular
EXAMPLE 2
Determine which lines, if any, are parallel or
perpendicular.
Line a y 5x 3
Line b x 5y 2
Line c 10y 2x 0
SOLUTION
Find the slopes of the lines.
Line a The equation is in slope-intercept form.
The slope is 5. Write the equations for lines b
and c in slope-intercept form.
2
Determine whether lines are parallel or
perpendicular
EXAMPLE 2
Line b
x 5y 2
5y x 2
Line c
10y 2x 0
10y 2x
3
Determine whether lines are parallel or
perpendicular
EXAMPLE 2
4
for Example 2
GUIDED PRACTICE
Determine which lines, if any, are parallel or
perpendicular.
Line a 2x 6y 3
Line b 3x 8 y
Line c 1.5y 4.5x 6
Find the slopes of the lines.
Line a 2x 6y 3
6y 2x 3
5
for Example 2
GUIDED PRACTICE
Line b 3x 8 y
Line c 1.5y 4.5x 6
1.5y 4.5x 6
y 3x 4