A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing
 one year ago
Determine whether y varies directly with x. If so, find the constant of variation k.
–7y = –3x
A. yes; 3/7
B. yes; 7/3
C. yes; 3
D. no
 one year ago
Determine whether y varies directly with x. If so, find the constant of variation k. –7y = –3x A. yes; 3/7 B. yes; 7/3 C. yes; 3 D. no

This Question is Closed

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1First ask yourself  what is the formula for Direct Variation? When you google this  you'll find that this formula is shown as \(\large \color{green}{ y = kx}\). We've got \(\large \color{red}{7y=3x}\) How do we change this to fit the form of direct variation? We divide both sides of the //equation by 7 \[\large \cfrac{7y}{7} = \cfrac{3}{7}x\] Simplifying both sides of the equation, what do we get?

Jhannybean
 one year ago
Best ResponseYou've already chosen the best response.1That's good. \[\large y=\color{blue}{\cfrac{3}{7}}x\]\(\large \cfrac{3}{7}\) is out "k" value.
Ask your own question
Ask a QuestionFind 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.