Question

What is the reflection image of (5, -3) across the y-axls? ○(-5, -3) ○(-5, 3) ○ (-3, 5)○ (5, 3)

Answer 1

A reflection across the y-axis is defined as:

$(x,y)\rightarrow(-x,y)$

Then in this case we have:

$(5,-3)\rightarrow(-5,-3)$

Therefore the answer is the first choice.