Not only is it important to be able to identify the piece of information you are looking for on the graph, but you will also need the tools to find this key feature. When you get to the real world applications, identification and application are crucial!
Important formulas to know:
x-intercept: |
Set the equation equal to 0 and factor or use the quadratic formula
|
x-intercept: |
Set the equation equal to 0 and solve by taking square roots
|
Why do we need to know all of this? Often times we like to compare important parts of parabolas.
Not convinced? Here's what you might be asked to do!
Not convinced? Here's what you might be asked to do!