Question

Write the coordinates of the vertices after a reflection across the y-axis.P (-7, -8) -> P' (___,___)Q (-7, -1) -> Q' (___,___)R (0, -1) -> R' (___,___)

Answer 1

Question:

Write the coordinates of the vertices after a reflection across the y-axis.



P (-7, -8) -> P' (___,___)

Q (-7, -1) -> Q' (___,___)

R (0, -1) -> R' (___,___)​

Solution:

When you reflect a point across the y-axis, then the y-coordinate remains the same, but the x-coordinate is transformed into its opposite (its sign is changed). Then the correct answer is:

P (-7, -8) -> P' (7,-8)

Q (-7, -1) -> Q' (7,-1)

R (0, -1) -> R' (0,-1)​