What is the value of a in the quadratic regression equation for these points: (2, 5), (4, 11), (5, 41), and (9, -2)?
A. -4.26
B. -3.7
C. -2.4
D. -0.96

I got C, is that correct?

Question

What is the value of a in the quadratic regression equation for these points: (2, 5), (4, 11), (5, 41), and (9, -2)?
	A.	-4.26
	B.	-3.7
	C.	-2.4
	D.	-0.96

I got C, is that correct?

anonymous · Answer

@Luigi0210

luigi0210 · Answer

If you said the "a" value, then yes you are correct

anonymous · Answer

would you agree @Directrix

directrix · Answer

Let me think.

directrix · Answer

a appears to be -2.4038.

I assume we are using y = a*x^2 + b*x + c as the general equation.

directrix · Answer

@katlin95   Which option is that?

anonymous · Answer

option C

anonymous · Answer

but wouldnt we have to round to the nearest hundreth?

jdoe0001 · Answer

yes

directrix · Answer

Is that part of the given instructions?

And, what about this post by  @Luigi0210    >>>If you said the "a" value, then yes you are correct .  "a" --> Is that option "a" or the "a" that is the coefficient of the x^2 term?

anonymous · Answer

Okay, so it would still be C then right guys?

luigi0210 · Answer

Yea, sorry I should of been more clear on that .-.
I meant "a" as in the coefficient

anonymous · Answer

Okay thanks guys!:)

directrix · Answer

We were happy to help.