SOLUTION: The vertices of Triangle DEF are D=(-4,4), E=(0,4), and F=(6,6). Use Matrix multiplication to reflect Triangle DEF across the x-axis. Draw the pre-image and image in a coordinate p

Algebra ->  Triangles -> SOLUTION: The vertices of Triangle DEF are D=(-4,4), E=(0,4), and F=(6,6). Use Matrix multiplication to reflect Triangle DEF across the x-axis. Draw the pre-image and image in a coordinate p      Log On


   

Question 1183444: The vertices of Triangle DEF are D=(-4,4), E=(0,4), and F=(6,6). Use Matrix multiplication to reflect Triangle DEF across the x-axis. Draw the pre-image and image in a coordinate plane.
Answer by Solver92311(821) About Me  (Show Source):
You can put this solution on YOUR website!


Convert each of the ordered pairs to a single column matrix:



Then multiply the reflection across the -axis transformation matrix:



For example, for point D: (-4,4):




Hence D': (-4,-4)

You can do the other two yourself.


John

My calculator said it, I believe it, that settles it

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