Question

Please help me!

I want to know, how will understand which equation represent the relationship at any given table?

Answer 1

@phi

Answer 2

@mathslover

Answer 3

in general, this is a hard problem for a table of "random" numbers.
but you could try this:
plot the (x,y) points and see if they look like a curve you know.
A nice "curve" would be a straight line.
or maybe a circle or ellipse
or parabola.

Answer 4

if they give you a choice of equations, you could pick an (x,y) pair from the table and see if the equation is true when you substitute in the x and y numbers.

Answer 5

Is there any way to check those?

Answer 6

to identify?

Answer 7

do you have a specific question that we can do ?

Answer 8

um dying to post but i cant. Because of new prob with Flvs and Openstudy

Answer 9

thats y, i m asking like this

Answer 10

all are something like this

y = - 1/2 x - 1

Answer 11

i meant option were like that

Answer 12

where i made error

Answer 13

what are you given ? a table of numbers and choices for the equation ?

Answer 14

in the table of number i have to choose which is the correct equation that represent in table

Answer 15

they shown table, told me the select one that represent

Answer 16

relation of the equation in that table

Answer 17

there are 2 ways to do this problem if all the equations are equations of a line
(in the form y= mx+b)

one way is use two (x,y) pairs from the table and find the slope and y-intercept.

the other way is pick an x from the table, and put that number into the first equation and see if you get the y value that is in the table. You will have to check that only one of the equations works. If 2 or more equations work, you have to test another (x,y) pair from the table, until you find the one equation that works.

Answer 18

x - y
-4 = -3
-2 = -2
0 = -1
2 = 0
4 = 1

Answer 19

for example, say you had
y = - 1/2 x - 1
y = 1/2 x - 1

and the table had numbers
0, -1
1, -1/2

if we try the first pair: (0,-1). that says try x=0 and see if we get -1
in the first choice: y = -1/2 * 0 -1 this gives y= -1 so this might be the equation
in the 2nd equation: y= 1/2*0 -1 this is -1 also. so we have to check another point

now try 1,-1/2 . first eq: y= -1/2 * 1 -1 = -1/2 - 1 = -3/2 this is not the y value in the table. so it's not this eq.

try the 2nd eq.: y= 1/2 * 1 -1 = 1/2 - 1 = -1/2
this matches. so this is the answer.

Answer 20

table are like this, all this number are contain that table

Answer 21

thank you so much for helping@phi ! :) ur tremendously amazing!

Answer 22

I love so much learning with you guys, i do not know my instructor ever let me to learn here, it is so great learning with you, i truly really enjoy and understand better here. But i do not know why they think, we are using it to cheat

Answer 23

I just posted question from test which were from old tests, so that i can understand where i make error, my instructor cant help us all the time, u guys are the only friends and helper where i ask and talk. And they are stopping me to that

Answer 24

I will gonna try to talk and explain them, i hope that they will understand and allow me to use Os. I am sorry @phi for talking alot. actually i m extremely mad for it. thank you so so much for helping!!!

Answer 25

They might, but I think some people are getting A's on their tests, but don't really know the material. That is unfair to others who do not cheat and are working hard.

Answer 26

good luck trying to work out something with them, but if your teacher won't let you come to OS, you should know it is for a good reason (to make things fair for everybody)

Answer 27

yea, thanks again