lvasquev462
A line contains points (-4, 2) and (0, -4). Another line graphed in the same coordinate plane contains points (4, 3) and (-5, -3). Based on the slopes of these lines, are they parallel, perpendicular or neither?
Delete
Share
This Question is Closed
CalebBeavers
Best Response
You've already chosen the best response.
0
Parallel lines: same slope
Perpendicular lines: negative inverse slope
lvasquev462
Best Response
You've already chosen the best response.
0
inverse slope
lvasquev462
Best Response
You've already chosen the best response.
0
its Parallel
ByteMe
Best Response
You've already chosen the best response.
0
What did you get for the slope of the first line?
FaisalAyaz
Best Response
You've already chosen the best response.
1
Inverse slope means they are perpendicular.
For Example If a line has slope 3 and other has -1/3 then these two lines are perpendicular.
lvasquev462
Best Response
You've already chosen the best response.
0
so it will be Parallel
CalebBeavers
Best Response
You've already chosen the best response.
0
What did you get for the slopes?
FaisalAyaz
Best Response
You've already chosen the best response.
1
Yes if the slopes of both the lines are same then lines are parallel.
lvasquev462
Best Response
You've already chosen the best response.
0
??????????????
CalebBeavers
Best Response
You've already chosen the best response.
0
You have to find the slope of both lines, do you know how to do that?
lvasquev462
Best Response
You've already chosen the best response.
0
no it has to be perpendicular
lvasquev462
Best Response
You've already chosen the best response.
0
2/4
CalebBeavers
Best Response
You've already chosen the best response.
0
lvasquev462
Best Response
You've already chosen the best response.
0
I gotten 2/4 and 1
FaisalAyaz
Best Response
You've already chosen the best response.
1
-3/2 and 2/3.
2/3 is negative reciprocal of -3/2.So Lines are perpendicular.
FaisalAyaz
Best Response
You've already chosen the best response.
1
how 2/4 and 1 lvasquev462? when there is a formula to find slope which is:
y2-y1/x2-x1.
So -4-2/0-(-4)=-6/4=-3/2
FaisalAyaz
Best Response
You've already chosen the best response.
1
Similarly find the slope of second equation.Which I got as 2/3.
So (m1)(m2)=-1.Then lines are perpendicular.
where m1=slope of first equation
and m2=slope of second equation.
FaisalAyaz
Best Response
You've already chosen the best response.
1
You remember formula (m1)(m2)=-1 to check either lines are perpendicular or not.ok