Two points reflected in the y-axis have opposite x-coordinates.
Practice makes perfect
We are given three vertices of â–ł JKL. To graph the triangle, let's plot the points and then connect them.
To find the images of the points reflected in the y-axis, we can use the coordinate rule. Two points reflected in the y-axis have opposite x-coordinates.
(a,b)
(- a, b)
J(1,3)
J'( -1,3)
K(4,4)
K'( -4,4)
L(3,1)
L'( -3,1)
Now we can graph the image of â–ł JKL after a reflection in the y-axis.
