1a and 1b question what is the quadrant function

a). Function is not a quadratic function

b). Quadratic function.

Step-by-step explanation:

1.a). x        y         Ist difference     IInd difference

     -2      -1                 -                             -

     -1        0           0 - (-1) = 1                    -

      0       4            4 - 0 = 4               = 4 - 1 = 3

      1        9            9 - 4 = 5               = 5 - 4 = 1

      2       15          15 - 9 = 6             = 6 - 5 = 1

Since, 2nd difference , and from the table are not common, function represented by the table is not a quadratic function.

b). -3x²+ x = y - 11

   -3x² + x + 11 = y

    y = -3x² + x + 11

Since, the highest degree term of the given function is of 2nd degree given function is a quadratic function.  

The correct option is A.

A) m, because ΔABC ~ ΔEDC

Step-by-step explanation:

Consider the both triangles.

<B = 60°

<D = 60°

<B and <D are congruent

<ACB = 90°

<DCE = 90°

<ACB and < DCE are also congruent.

As sum of the angles of triangle is 180°

<A = 180° - <ACB - <B

<A = 180° - 90° - 60

<A = 30° = m

<E = 180° - <DCE - <D

<E = 180° - 90° - 60°

<E = 30°

As m = 30°

<E = <CED = m

As segment AD cuts segment BE, which results in formation of two triangle, and as all angles of both triangles are equal, both triangles are similar.