A community for students.
Here's the question you clicked on:
 0 viewing
marird15
 3 years ago
How can u tell whether these lines are parallel or perpendicular or neither with out graphing?
line 1; through (1,9) and (6,6)
line 2; through (7,23) and (0,2)
marird15
 3 years ago
How can u tell whether these lines are parallel or perpendicular or neither with out graphing? line 1; through (1,9) and (6,6) line 2; through (7,23) and (0,2)

This Question is Closed

RyanL.
 3 years ago
Best ResponseYou've already chosen the best response.1(1,9) and (6,6) : slope =3 (7,23) and (0,2): slope=3 same slope means lines are parallel

marird15
 3 years ago
Best ResponseYou've already chosen the best response.1how did you figure that out with out graphing?

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.0there is a formula to find the slope of line with 2 points given....

radar
 3 years ago
Best ResponseYou've already chosen the best response.0They calculated the slope of each line using \[\Delta y \over \Delta x\] When the slopes are equal to each other (in this case they were both 3) they are parallel. If they were negative reciprocals like one was 3 and the other 1/3. then they would of been perpendicular.

hartnn
 3 years ago
Best ResponseYou've already chosen the best response.0for perpendicular,slopes must be negative inverse

RyanL.
 3 years ago
Best ResponseYou've already chosen the best response.1@radar I used that method....sorry for nothing showing my work.

marird15
 3 years ago
Best ResponseYou've already chosen the best response.1ohhhh. okay i got it. and its okay @RyanL.

radar
 3 years ago
Best ResponseYou've already chosen the best response.0@RyanL, good work, I was just trying to assist. I want to explain what a negative reciprocal is, because by the questions being submitted he is going to need to understand that too.

radar
 3 years ago
Best ResponseYou've already chosen the best response.0One number is a negative reciprocal of another number if their product is 1.

marird15
 3 years ago
Best ResponseYou've already chosen the best response.1its alright.. and okay thanks.. again. lol
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.