Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
DaniBieber
Group Title
Im a little confused. Please Help?
Determine whether the formula describes y as a function of x. Explain your reasoning.
y = x
 2 years ago
 2 years ago
DaniBieber Group Title
Im a little confused. Please Help? Determine whether the formula describes y as a function of x. Explain your reasoning. y = x
 2 years ago
 2 years ago

This Question is Closed

joshi Group TitleBest ResponseYou've already chosen the best response.2
well a function is a relation between numbers where every x value has only one corresponding y value. for ex: if i have a set of numbers (2,1) (2,0) this isn't a function because for the x value of 2 i have 2 different y values of 1 and 0. so for this question you can start by making a table of values to see if it's a function or not. ex: X  Y  1 1  
 2 years ago

DaniBieber Group TitleBest ResponseYou've already chosen the best response.0
@joshi Thank you, but i'm still confused. I don' have a set of numbers..
 2 years ago

Decart Group TitleBest ResponseYou've already chosen the best response.0
plug in and solve like x=2 y=2
 2 years ago

joshi Group TitleBest ResponseYou've already chosen the best response.2
oh i'm sorry i was just trying to a explain what a function was with an example. at the end i was saying that you could make a chart/table to see if it was a function or not. like up there i said if x is 1, then y is 1. because y= x so y= (1) , y =1 and if x was 2, y would be... etc. if the function thing or the definition is confusing, it's basically like: (the photo) kinda lame but that's how i take notes
 2 years ago

DaniBieber Group TitleBest ResponseYou've already chosen the best response.0
@Decart @joshi thank you guys so much for your help,and your notes, they helped a lot, but i'm still confused. So y is a function of x in this equation, right? In y=x? But, why. Once, i figure that out I will see how you guys actually did it, and i will be a whole lot confused!
 2 years ago

Decart Group TitleBest ResponseYou've already chosen the best response.0
http://www.youtube.com/watch?v=JkziIA3AtMM
 2 years ago

joshi Group TitleBest ResponseYou've already chosen the best response.2
yes it's a function. well why do you think it is?
 2 years ago

DaniBieber Group TitleBest ResponseYou've already chosen the best response.0
@joshi because when you make a table, there is no x and y value that are equal to eachother?
 2 years ago

joshi Group TitleBest ResponseYou've already chosen the best response.2
it's not about the x and y values being equal to each other. it's like one x value can't have 2 different y values.
 2 years ago

joshi Group TitleBest ResponseYou've already chosen the best response.2
so in the photo each x value has a certain y value. but when x is 5 y is 7. and then when x is 5 y is also 8. so its not a function because for the same x value you have 2 different y values
 2 years ago

DaniBieber Group TitleBest ResponseYou've already chosen the best response.0
@joshi that makes so much sense! thank you so much. I get it now!
 2 years ago

joshi Group TitleBest ResponseYou've already chosen the best response.2
oh really? yay! that's great! glad it made sense! :D
 2 years 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.