Question

One of the tables below contains (x,y) values that were generated by a linear function. Determine which table, and then write the equation of the linear function represented by the table
The tables
http://i.imgur.com/nS4iKVk.png

Answer 1

I know that it's table 3 but i need help with the equation

Answer 2

You know how to set up a slope intercept form equation

Answer 3

@ShantelT1

Answer 4

nope

Answer 5

so you never seen this equation form before?

\[(y_{2}-y)= m(x_{2}-x)\]where "m" is your slope and "x" and "y" is your chosen coordinate values?

Answer 6

Figure out what your slope is by using the slope formula\[m=\frac{ y_{2}-y_{1} }{ x_{2}-x_{1} }\] then plug that slope into your slope intercept form and using any "x" and "y" value then simplify the equation and you'll get the linear function of that table.

Answer 7

@ShantelT1

If you know it is Table 3, then go to this site and enter the data to get the equation:

http://easycalculation.com/statistics/regression.php

Because you have 7 data pairs, click on "Add More" six times, and then enter the data.

If you are online in this thread now, post what you get, and we can compare answers, okay?

Answer 8

Attached is an image of this calculator.

Answer 9

ok i got
7
2.5
-4
-4+2.5X

Answer 10

Sorry to be so slow in responding. The OpenStudy messaging system is messed up.

This is what I got: y = -4+2.5X. @ShantelT1

Answer 11

-So that's the equation ?

Answer 12

You can test it with the ordered pairs you were given.

You might want to write the equation as y = 2.5x -4 although that is the same as
y = -4 +2.5x.