Question

@triciaal
Variable y varies directly with x2, and y = 48 when x = 4.

Which graph represents the quadratic variation?

A.
http://static.k12.com/calms_media/media/1540000_1540500/1540310/1/e704306724d0e3058f5f975d02ad64262eb5d886/MS_ALG_S2_01_12_quiz_Q5a_question.gif

B.
http://static.k12.com/calms_media/media/1540000_1540500/1540311/1/d3c9c95d917ce7280f5dbce58d52cc1b289e4903/MS_ALG_S2_01_12_quiz_Q5b_question.gif

C.
http://static.k12.com/calms_media/media/1540000_1540500/1540312/1/520c64d5cf628a3b4b22b816792234a7675902b7/MS_ALG_S2_01_12_quiz_Q5c_question.gif

D.

Answer 1

D. http://static.k12.com/calms_media/media/1540000_1540500/1540313/1/69f31c1a860fc344187f2804ec831319d4f09b69/MS_ALG_S2_01_12_quiz_Q5d_question.gif

Answer 2

I think its C?

Answer 3

@Directrix ?

Answer 4

y varies directly with x^2

y= k * x^2 , where k is the constant of variation

y=48 when; x=4

48 = k * (4)^2

Solve for k @*louisa*

Answer 5

8?

Answer 6

48 = k * 16

What is 48 divided by 16 =

Answer 7

3

Answer 8

So, the equation of the parabola is y = 3* x^2

You asked about option C.

So, let's look at it.

Are the points on the graph shown - do they have y values three times the square of the x values.

Answer 9

Umm no...

Answer 10

Look at point (-3.12) on the graph of option C.


Is (-3) * (-3) * 3 = 12 ? Agree or disagree?

Answer 11

No
(-3)*(-3)*3 = 27

Answer 12

@*louisa* Answer and let's get a wrap on this problem, okay?

Answer 13

So it is C?

Answer 14

You are correct in that calculation.

I am not correct in the question I asked.

I'll ask the right question this time.

Answer 15

Ok thx

Answer 16

(-2,12) is a point on the graph of option C

So, here is the question: (-2) * (-2) * (3) = 12 Agree or Disagree.

Answer 17

Agree

Answer 18

Yes, so Option C is my choice for the answer. I agree with you on that.

Answer 19

Ok thx(:

Answer 20

You are welcome.