What quadratic function does the graph represent?

,

Step-by-step explanation:

The function of the graph can be written in the vertex form as

, where V(h,k)=V(2,4) is the vertex of the quadratic function.

We substitute the value to obtain;

,

The point (5,1) lies on the graph so we use it to determine the value of a.

,

,

,

The required equation is

,

75

step-by-step explanation:

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl