It is needed at least one more piece of information.
If you call k the ratio a'b' / ab , the addtional information may be tha cb' has the same ratio to cb or that ca' has the same ratio to ca.
It migh also be that the angle at the vertex C has not changed.
Anything else? there isnt a question.
This is a parabola which opens upwards
y - (-3) = sqrt ((y+1)^2 + (x + 5)^2
(y + 3)^2 = y^2 + 2y + 1 + (x + 5)^2
y^2 + 6y + 9 = y^2 + 2y + 1 + (x + 5)^2
(x + 5)^2 = 4y + 8
(x + 5)^2 = 4(y + 2)
Its C
