A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 3 years ago
In the diagram below of circle C, QR is a diameter, and Q(1, 8) and C(3.5 , 2) are points on a coordinate plane. Find and state the coordinates of point R.
anonymous
 3 years ago
In the diagram below of circle C, QR is a diameter, and Q(1, 8) and C(3.5 , 2) are points on a coordinate plane. Find and state the coordinates of point R.

This Question is Closed

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0dw:1339302689432:dw

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Use the midpoint formula, but work back wards. (3.5, 2) = (x_1 + x_2/2, y_1 + y_2/2) (7, 4) = (1 + x_2, 8 + y_2) (6, 4) = (x_2, y_2) Therefore, (6, 4)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0(x3.5)^2 + (y2)^2 = 6.5^2

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0wait, I'm still confused about how to get it...

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0What are you confused on?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0(x the x co ordinate of c)^2 + (y the y co ordinate of C) ^2 = the radius squared

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Point C is the midpoint and therefore you can work backwards using the midpoint formula.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0@aceace I think you misread the question...

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0how do I work backwords though?

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0soory if i mis read the question

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.03.5 = (1 + x)/2 7 = 1 + x x = 6 The x coordinate of R is 6. Then work with y. 2 = (8 + y)/2 4 = 8 + y y = 4 Therefore, the ycoordinate of R is 4. R(6, 4)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Just focus on one of the values. FOr instance, what I did up there is start with x and then y.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0Do you get it?\[M(x, y) = ((x_{1} + x_{2})/2, (y_{1} + y_{2})/2)\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0OHHH. Oh I'm sorry, I was really confused from when you meant backwards but I get it now LOL thank you SO much x)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0lol. Alright. You're welcome :)
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.