What is the image of (-8, 10) when reflected in the y-axis?

if you're just reflecting the point over the y-axis it just becomes (8,10)

(8, 10)

Explanation and Example:

I have a trick that I use. I'm not sure if it will make sense to you but I'll explain it. When the question asks you to reflect over the x-axis, then keep the x in (x,y) the same and just flip the sign for the y. If the question asks you to reflect over the y-axis, then keep y the same and flip the sign for x.

Reflect over x-axis:

(-2, 6) > (-2, -6)

Reflect over y-axis:

(-4, -8) > (4, -8)