Lines m
and n
are parallel. Line p
is perpendicular to both line m
and line n
. Which statement about lines m
, n
, and p
is NOT always true?
On a coordinate plane, lines m and n are parallel. Line p is perpendicular to both lines.
CLEAR CHECK
The product of the slopes of line m
and line p
is −1
.
The product of the slopes of line p
and line n
is −1
.
Line m
and line n
have the same slope.
The sum of the slopes of line n
and line p
is 0
.