Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

PrincessInsainty

can someone help me in math? 1. Suppose y varies directly with x and y = 14 when x = –4. What is the value of y when x = –6? (1 point) –21 10 18 21 2. Suppose y varies directly with x and y = 25 when x = 140. What is the value of x when y = 36? (1 point) 140 165 201.6 176 3. The point (12, 9) is included in a direct variation. What is the constant of variation? (1 point) 1/2 3/4 1 2

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. Harkirat
    Best Response
    You've already chosen the best response.
    Medals 8

    In case of direct variation, x x1 x2 x3 --- = constant, so ----- = ------ = ------ y y1 y2 y3 i) y = 14 when x = –4. What is the value of y when x = –6? (1 point) -4 -6 so ----- = ------ 14 ? -4* ? = -6 * 14 ? = -84/-4 = 21 so when x = -6, y is 21.

    • 2 years ago
  2. Harkirat
    Best Response
    You've already chosen the best response.
    Medals 8

    2. Suppose y varies directly with x and y = 25 when x = 140. What is the value of x when y = 36? 140 ? so ------ = ------ 25 36 140 * 36 = ? * 25 5040/25 = ? 201.6 = ? so when y=36, then x=201.6

    • 2 years ago
  3. Harkirat
    Best Response
    You've already chosen the best response.
    Medals 8

    3. The point (12, 9) is included in a direct variation. What is the constant of variation? x y 9 3 constant = ----- or ----- = ------ = ---- y x 12 4 so constant is 3/4

    • 2 years ago
    • Attachments:

See more questions >>>

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
  • 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.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.