Question

Triangle XYZ is reflected across the y-axis, and X = (4,-5). What are the coordinates of X'?

Answer 1

Answer:

$X' = (-4,-5)$

Step-by-step explanation:

Given

$X = (4,-5)$

Reflection: Across y axis

Required

Determine X'

When a point (x,y) is reflected across the y axis, the image of the reflection is (-x,y)

So:

$X = (4,-5)$

The image would be:

$X' = (-4,-5)$

The y coordinate remains the same but the x is negated