Question

What is the reflection image of U across the y-axis?

Please help the graph is attach

(1, 5)
(1, -5)
(-1, -5)
(-1, 5)

Answer 1

Reflection of point U across y-axis = (1, -5)

why . . .

reflection across y-axis means to take the negative of the x-value, and since point U has coordinates (-1, -5), the negative of -1 is 1, then the reflected coordinate must be (1, -5)

Answer 2

B.
`(1,-5)`

Explanation:

We have been coordinates of some points on coordinate plane. We are asked to find the reflection image of U across the y-axis.

We know that after reflecting a point across y-axis, the y-coordinate of point remains same, while x-coordinate changes to its opposite sign.

We can see that coordinates of point U are
`(-1,-5)`. After the reflection across y-axis the y-coordinate will remain same that is
`-5`, while x-coordinate will be opposite of
`-1` that is
`-(-1)=1`

Therefore, the coordinates of point U after reflection across y-axis would be
`(1,-5)` and option B is the correct choice.