Question

write the coordinates of the vertices after a reflection over the y-axis.
b((
c(
d((

Explanation:

Step1: Identify original coordinates

Original vertices: $B(8,1)$, $C(9,8)$, $D(5,3)$

Step2: Apply y-axis reflection rule

For a point $(x,y)$, reflection over y-axis is $(-x,y)$.

• $B'$: $(-8,1)$
• $C'$: $(-9,8)$
• $D'$: $(-5,3)$

Answer:

$B'(-8, 1)$
$C'(-9, 8)$
$D'(-5, 3)$