Question

write the coordinates of the vertices after a reflection over the y-axis.

Explanation:

Step1: Identify original vertex coordinates

Original vertices: $L(0,0)$, $K(0,-9)$, $J(-9,-9)$, $M(-9,0)$

Step2: Apply y-axis reflection rule

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

• $L(0,0)$: $(-0,0)=(0,0)$
• $K(0,-9)$: $(-0,-9)=(0,-9)$
• $J(-9,-9)$: $(-(-9),-9)=(9,-9)$
• $M(-9,0)$: $(-(-9),0)=(9,0)$

Answer:

$L'(0,0)$, $K'(0,-9)$, $J'(9,-9)$, $M'(9,0)$