Anyone know what the vertex would be ?

Step-by-step explanation:

The graph of the parabola passes through the points (-1,0), (0,-1) and (1,4).

Let be the equation of the parabola. Substitute the coordinates of the points:

Substitute into the first and third equations:

Add them:

Hence,

Find the vertex:

So, the vertex has coordinates

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

hope this is what you were asking for!

step-by-step explanation: