Question

Look at triangle ABC on the coordinate plane. 1 Which coordinate plane shows triangle ABC after a reflection over the y-axis?

Answer 1

We a figure is being reflected over the y-axis, the y-coordinates of its point will not change. However, the x-coordinates will be multiplied by -1.

Given points of the figure:

Point A: -5,-2

Point B: -4,-4

Point C: -6,-4

Let's now determine the new points of the figure once reflected over the y-axis.

Point A: -5,-2 ➜ Point A': (-5)(-1),-2 = 5,-2

Point B: -4,-4 ➜ Point B': (-4)(-1),-4 = 4,-2

Point C: -6,-4 ➜ Point C': (-6)(-1),-4 = 7,-4

Looking at the