HELP QUICK 25 POINTS Identify the rotation rule on a coordinate plane that verifies that triangle A(2,-1), B(4,1), C(3,3) and triangle A'(-2, 1), B'(-4,-1), C'(-3,-3) are congruent when rotated 90 degrees
A) (x, y) ---> (-x, -y)
B) (x, y) ---> (-x, -y)
C) (x, y) ---> (y, x)
D) the triangles are not congruent

a i think sorry if i got it wrong im horrible at math

Step-by-step explanation:

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this

50.6

step-by-step explanation: