Finding a Line of Symmetry of a Graph
If a graph of a function has a line of symmetry, the function be even about line. This means that if the function is transformed so that the line becomes the y axis, we will be able to writewherefor some number
The graph has a vertical line of symmetry with equation
Suppose we writethenso that the lineis the line
Write thenandis even sooris a line of symmetry.