Use your graphing shortcuts to graph
What is the vertex?
The vertex is exactly halfway between the two
-intercepts because a parabola's line of symmetry is on the vertex.
At the vertex, the
-coordinate is . Substitute into the equation to solve for and find the coordinates of the vertex.
Plot the point you found and sketch the parabola.
Describe the domain and range of this relation.
What is the domain of this graph, that is, what are the possible
What is the range, or possible
-values, of this graph?
D: all real numbers R: