Answer:
A
Explanation:
Parallel lines have equal slopes
The product of the slopes of perpendicular lines = - 1
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
A
y =
x + 2 → has slope m =
y = -
x - 7 → has slope m = -
and
× -
= - 1
Thus this pair of lines are perpendicular
B are neither parallel nor perpendicular
C have equal slope and are parallel
D are neither parallel nor perpendicular