SOLUTION: The vertices PQR are located at P -5, 2 and Q -2,5 and R -1, -1. The triangle can be plotted on a grid. PQR is first reflected over the y axis and then reflected over the x axis. W

Algebra ->  Length-and-distance -> SOLUTION: The vertices PQR are located at P -5, 2 and Q -2,5 and R -1, -1. The triangle can be plotted on a grid. PQR is first reflected over the y axis and then reflected over the x axis. W      Log On


   

Question 959513: The vertices PQR are located at P -5, 2 and Q -2,5 and R -1, -1. The triangle can be plotted on a grid. PQR is first reflected over the y axis and then reflected over the x axis. What are the coordinates of the vertices of the resulting triangle???
I am so confused. Please help me
Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
A reflection flips a figure over a line of reflection to create a mirror image.
To reflect about the y-axis we take each coordinate pair and apply the following rule (x,y) = (-x,y)
we are given (-5,2), (-2,5), (-1,-1) and to reflect about the y axis we get (5,2), (2,5), (1,-1)
We now need to reflect the y-axis flip about the x-axis, we use the following rule (x,y) = (x,-y) and we get
(5,-2), (2,-5), (1,1)