Parallel Lines:

1
Parallel Lines Use slope-intercept form to
determine whether the lines are
parallel. 1. Write equations of
parallel lines. 2. Write an equation of a line
that contains ( 5 , 1 ) and is parallel to
Have the same slopes and different y-intercepts.
SLOPES ARE THE SAME!!
2
Perpendicular Lines 3. Write an equation of
a line that contains ( 0 , -2 ) and is
perpendicular to y 5x 3. Tell whether
the lines are parallel, perpendicular, or
neither. 4. 5.
Intersect at 90º angles. Their SLOPES ARE
OPPOSITE RECIPROCALS!