Is the lines y=-x-7 and y-x=20 perpendicular?
1 answer:
Answer:
yes
Step-by-step explanation:
rearrange the equations
x+y+7=0 &
x-y+20=0
find out slopes of the lines
which is -a/b
for the first one it is
-1/1=-1
and for the second
-1/-1=1
find the product of the slopes
-1×1 = -1
since the product of the slopes is -1
the lines are perpendicular
You might be interested in
A kilogram is 1000 grams. Therefore, 5000 g is 5 kg
Answer:
you did not add a picture or any other over fractions.
Step-by-step explanation:
Answer:2
Step-by-step explanation: 5 - 3 = 2
Answer:
a.4
Step-by-step explanation:
because