+0

0
425
2

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
0

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
+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