Question

what will be the mirror image of (2,-4)in y axis

Answer 1

your answer

≥ The reflection of (2,-4) in y axis will be
$- 2 \: and - 4$
hope helps

Answer 2

Answer:

(-2,-4)

Now,

When we have y-axis as mirror,

x-axis will change its sign.

but,

y-axis will not change its sign.