1.3 SYMMETRY
-
Upload
sharon-henry -
Category
Technology
-
view
604 -
download
0
description
Transcript of 1.3 SYMMETRY
1.3Symmetry
x-Axis Symmetry
A graph is said to be symmetric with respect to the x-axis if for every point (x,y) on the graph, the point (x,-y) is on the graph.
y-Axis Symmetry
A graph is said to be symmetric with respect to the y-axis if for every point (x,y) on the graph, the point (-x,y) is on the graph.
origin Symmetry
A graph is said to be symmetric with respect to the origin if for every point (x,y) on the graph, the point (-x,-y) is on the graph.
Tests for Symmetry
x-axisReplace y by -y in the equation. If an equivalent equation results, the graph is symmetric with respect to the x-axis.
y-axis Replace x by -x in the equation. If an equivalent equation results, the graph is symmetric with respect to the y-axis.
origin Replace x by -x and y by -y in the equation. If an equivalent equation results, the graph is symmetric with respect to the origin.
Not symmetric with respect to the x-axis.
Symmetric with respect to the y-axis.
Not symmetric with respect to the origin.