Question

1. triangle ijk has the coordinates listed: i(5, -8) j(10, -8) k(7, -4)

where is j after a reflection over the y - axis?
(-10,-8)

Explanation:

Step1: Recall reflection rule

The rule for reflecting a point $(x,y)$ over the y - axis is $(-x,y)$.

Step2: Apply rule to point J

The coordinates of J are $(10, - 8)$. Applying the rule, we change the sign of the x - coordinate. So $x = 10$ becomes $x=-10$ and $y=-8$ remains the same.

Answer:

$(-10,-8)$