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Which equation best represents this data set?

(-4, -4.8) ( -3, -8.2) ( -2, -9.1) ( -1, -8.1) ( 0, -4.7) ( 1, .3)

 

A. y=1.1x2+4.2x+4.9

B. y=1.1x2+4.2x-4.9

C. y=1.1x+4.2

D. y=1.1x-4.2

Guest May 25, 2017
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3+0 Answers

 #1
avatar+77131 
+2

 

 

Look at the graph of the data points, here :

 

https://www.desmos.com/calculator/o7kuhjqe3b

 

Neither "C" nor "D"   [ both linear ]  will model the data

 

It appears from the graph that  "B" is the best choice

 

 

cool cool cool

CPhill  May 25, 2017
edited by CPhill  May 25, 2017
 #2
avatar+4777 
+1

And...If the red dot is (-4,-4.8) ..then choice B fits just right! smiley

hectictar  May 25, 2017
 #3
avatar+77131 
+1

 

Thanks, hectictar, for catching that mis-type.  I fixed it ...and you're correct.....perfect fit....!!!

 

 

 

cool cool cool

CPhill  May 25, 2017

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