the two lines y=2/5x+9 and y= -2/5x-9 are:
a) parallel
b) perpendicular
c)neither

Answer:
neither
Step-by-step explanation:
parallel lines have the same slope and different y-intercept
perpendicular lines have the reciprocal as slopes( 2/5 and 5/2)
as these slopes have neither the answer in NEITHER