Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
douglas12
Group Title
Determine whether y varies directly with x. If so, find the constant of variation k and write the equation.
x:
7
13
19
25
y:
11.2
20.8
30.4
40
A. yes; k = 1.6; y = 1.6x
B. yes; k = 6; y = 6x
C. yes; k = 7; y = 7x
D. no
 one year ago
 one year ago
douglas12 Group Title
Determine whether y varies directly with x. If so, find the constant of variation k and write the equation. x: 7 13 19 25 y: 11.2 20.8 30.4 40 A. yes; k = 1.6; y = 1.6x B. yes; k = 6; y = 6x C. yes; k = 7; y = 7x D. no
 one year ago
 one year ago

This Question is Closed

whpalmer4 Group TitleBest ResponseYou've already chosen the best response.0
Divide each value of y by the corresponding value of x. If the answer is the same each time, y varies directly with x and the quotient is the variation constant k.
 one year ago

Awstinf Group TitleBest ResponseYou've already chosen the best response.0
y varies directly with x
 one year ago

Awstinf Group TitleBest ResponseYou've already chosen the best response.0
yx=k correct?
 one year ago

vinnv226 Group TitleBest ResponseYou've already chosen the best response.0
No, I believe thats the equation for inversely proportional.
 one year ago

Awstinf Group TitleBest ResponseYou've already chosen the best response.0
my bad yeah youre right
 one year ago

vinnv226 Group TitleBest ResponseYou've already chosen the best response.0
For directly proportional, y=kx
 one year ago

Awstinf Group TitleBest ResponseYou've already chosen the best response.0
sorry im trying to lead him to the answer not list it
 one year ago

douglas12 Group TitleBest ResponseYou've already chosen the best response.0
so is the answer A
 one year ago

vinnv226 Group TitleBest ResponseYou've already chosen the best response.0
Yep, the y values are 1.6 times the x values, so the answer is A.
 one year ago

whpalmer4 Group TitleBest ResponseYou've already chosen the best response.0
If the quotient for each y/x =1.6, then it is direct variation with k =1.6
 one year ago
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
 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.