Lesson 4 Directing Our Focus Develop Understanding
Graph each set of functions on the same coordinate axes. Describe in what way the graphs are the same and in what way they are different.
The geometric definition of a parabola states that the distance from the focus
According to this definition, is the point
Use a straightedge to draw a line segment from
Write an equation that relates the lengths of the two line segments, and calculate the distance from
What is the value of
What are the missing values of
Write the equation of this parabola for any value of using the geometric definition.
Use the point
Use completing the square to find the center