Question

how can i write :• rotation of 90 degrees counterclockwise about the origin, point O

as a function?

Answer 1

f(x) shifted upward a units = f(x) + a
f(x) shifted downward a units = f(x) – a
f(x) shifted left a units = f(x + a)
f(x) shifted right a units = f(x – a)
f(x) reflected about the x-axis = –f(x)
f(x) reflected about the y-axis = f(-x)
To rotate (A , B) 90 degrees counter clockwise -> (-B , A)
To rotate (A , B) 180 degrees counter clockwise -> (-A , -B)
To rotate (A , B) 270 degrees counter clockwise -> (B , -A)

Answer 2

hope it helps