Question

a) reflect triangle a in the x axis. b) reflect triangle a in the line y=-x c) Rotate the triangle A 90 degrees around the origin (mathswatch)

Answer 1

A) reflect triangle A over the x-axis Triangle A: (4,-2) (4,-4) (1,-4)

B) Reflect Triangle A over the line y= -x Triangle A: (-2,4) (-4,-4) (-4,-1)

C) Rotate Triangle A 90 degrees counterclockwise Triangle A: (2,-4) (4,-4) (4,-1)

Explanation:

A) When reflecting points over the x axis, the points change from

(x,y) to (x,-y)

B) When reflecting points over the line y=-x, the points change from

(x,y) to (-y,-x)

C) When rotating points 90 degrees counterclockwise around the origin, the points change from (x,y) to (y,-x)