Home > CCA2 > Chapter 2 > Lesson 2.2.1 > Problem 2-82
2-82.
Find the
- and -intercepts. To find the
-intercept, substitute for . To find the
-intercepts, factor the equation and substitute for . The
-intercept is and the -intercepts are and Where is the line of symmetry of this parabola? Write its equation.
To find the line of symmetry, average the
-values of the -intercepts. Find the coordinates of the vertex.
Substitute the
-value for the line of symmetry into the equation.
Use the eTool below to graph the equation.
Click the link at right for the full version of the eTool: 2-82 HW eTool