We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
0
201
2
avatar+256 

Which quadratic equation fits the data in the table?

y = x² + 4x + 1                                                        

y = x^2−4x+1

y = x^2−4x−1

y = −x^2−4x+1

 

Use a graphing calculator or other technology to answer the question.

Which quadratic regression equation best fits the data set?

yˆ = 1568.065x^2 − 115.265x + 2.608 ​

​ yˆ = 2.608x^2 + 115.265x + 1568.065 ​

yˆ = 2.608x^2 − 115.265x + 1568.065

yˆ = 1568.065x^2 + 115.265x + 2.608

 

 

What is the quadratic regression equation for the data set?

yˆ = 0.032x^2 − 0.601x − 0.255

yˆ = 0.032x^2 − 0.601

yˆ = 0.032x^2 + 0.601x − 0.255

yˆ = 0.032x^2 − 0.601x

 Mar 1, 2019
 #1
avatar+18840 
+2

I do not have a praphing calculator...but I can answer the first one....

Look at the data points

with x = 0    all of the equations will result  in y=1    EXCEPT for the 3rd one...toss the 3rd choice

 

with  x = 3   only the second equation yields  y = -2   so it is the winner...

  Just to be sure , check at x=4   for the second equation,   y = 1   Check!

 Mar 1, 2019
 #2
avatar+234 
+1

Go to Geogebra for a good graphing calculator. You can just type the equations in super easily, and input shapes in there as well. Just put those in and see what works!

 Mar 1, 2019

12 Online Users

avatar