Question

What are the coordinates of point B' after triangle ABC is reflected across the y-acis

Answer 1

B'(-3, 2)

Explanation:

In the triangle, point B is at (3, 2).

We want to find the coordinates of B', the image of B when triangle ABC is reflected over the y-axis.

When a point (x,y) is reflected over the y-axis, the transformation rule is:

`(x,y)\to(-x,y)`

This means that the x-coordinate changes to the opposite sign while the y-coordinate stays the same.

Applying this rule, we have:

`B(3,2)\to B^(\prime)(-3,2)`

Thus, the coordinates of point B' after triangle ABC is reflected across the y-axis will be B'(-3, 2).