Question

On a coordinate grid, both point (3, 5) and point (−2, −4) are reflected across the y-axis. What are the coordinates of the reflected points?
(−3, 5) and (2, 4)
(−3, 5) and (2, −4)
(−3, −5) and (−2, −4)
(3, −5) and (−2, −4)

Answer 1

Since I already explained how you solve these, in the last question, I am going to skip that part. 

(3, 5) and (-2, -4) are reflections of (-3, 5) and (2, -4) and vice versa.

I hope this helps! 

Answer 2

reflect across the y-axis => change sign of first coordinate
(3, 5) (SOY)-> (-3,5)
 (−2, −4) (SOY)->  (2,-4)
Answer: B (−3, 5) and (2, −4)