Question

Now reflect △A′ (1,5) B′ (9,5) C′ (7,2)
across the y-axis to create △A"B"C"
. What are the new coordinates?(3 points)
A"
(
,
)

B"
(
,
)

C"
(
,
)

Answer 1

To reflect the points \( A' (1, 5) \), \( B' (9, 5) \), and \( C' (7, 2) \) across the y-axis, we need to change the sign of the x-coordinates while keeping the y-coordinates the same.

1. For point \( A' (1, 5) \):
\[
A" = (-1, 5)
\]

2. For point \( B' (9, 5) \):
\[
B" = (-9, 5)
\]

3. For point \( C' (7, 2) \):
\[
C" = (-7, 2)
\]

Thus, the new coordinates after reflecting across the y-axis are:

A"
\[
(-1, 5)
\]

B"
\[
(-9, 5)
\]

C"
\[
(-7, 2)
\]