The transformation T = [0 -1] [-1 0]

is applied to the figure below.

What type of transformation of triangle ABC was applied by T?

rotate 180° counterclockwise about the origin

reflect across the line y = x

reflect across the line y=-x

rotate 270° counterclockwise about the origin

its C

a ruler? idk

step-by-step explanation:

b and c

step-by-step explanation:

m∠a is 90°

m∠b is 40°

x coordinate can be written by using the formula, x= x1 + 2/5(x2 - x1)

step-by-step explanation:

formula

x = x1 + p/w(x2 - x1)

let the line segment ab with a(x1,y1) and b(x2,y2)

a point(x,y) divide ab in the ratio, 2: 3 the x coordinate can be written as

x = x1 + p/w(x2 - x1)

here p=2 and w = 2+3

therefore,

x coordinate can be written by using the formula, x= x1 + 2/5(x2 - x1)

similarly y coordinate y = y1 + 2/5(y2 - y1)