Question

Triangle ABC
is reflected across the x
-axis. If the coordinates of the original shape are A(−4,−1)
, B(−5,−2)
, and C(−10,−1)
, what are the coordinates of A′
, B′
, and C′
?

Answer 1

Reflection across the x-axis keeps x the same and negates y. So

- A' = (−4, 1)
- B' = (−5, 2)
- C' = (−10, 1)