Question

Graph the reflection of the polygon in the given line #7 y-axis

Answer 1

Step 1:

First, write the coordinates of A, B, and C.

A = ( 1, 4)

B = (2, 2)

C = (-3, 1)

Step 2:

Find the coordinates of the image after reflection about y-axis

Apply the rule below to find the coordinates of the image from the pre-image

Pre-image (x, y) = Image (-x, y) after reflection about y-axis

Step 3:

Coordinates of A', B' , and C'

A = (1,4) A' = (-1,4)

B = (2,2) B' = (-2,2)

C = (-3,1) C' = (3,1)

Step 4:

The graph of the reflection across y-axis is shown above.

The cooedinates of the image after reflection across y-axis are:

A' = (-1,4)

B' = (-2,2)

C' = (3,1)