Question

MEDAL & FAN ANYBODY ?
A triangle with A(4, 8), B(7, 5), and C(2, –1) is reflected over the x-axis. What are the new points?
a. A(4, –8), B(7, –5), C(2, 1)
b. A(–4, –8), B(–7, –5),C(–2, 1)
c. A(–4, 8), B(–7, 5), C(–2, –1)
d. A(–8, 4), B(–5, 7), C(1, 2)

Answer 1

Hint:
Sx: (x,y)->(x,-y)

Answer 2

Just do what mathmate gave you.