# Writing an Equation in Standard Form

Taught by mrbrianmclogan
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Part of video series
Meets NCTM Standards:
Errors in this video:

At about the 2:53 mark, the teacher says that a > 1 means that the graph opens upward. He should have said that if a is positive, then the graph opens upward.
Also, a is not greater than 1 in this example (a=1).

Lesson Summary:

This lesson teaches you how to write a quadratic equation in standard form and find the vertex of the graph. By completing the square, you can obtain the necessary values for standard form and then use them to sketch the graph. Remembering to use the formula b over 2a squared is key to ensuring you get a perfect square. Once you have your equation in standard form, you can determine the vertex of the graph and whether it will open upwards or downwards based on the value of "a".

Lesson Description:

How to write an equation in standard form and find the vertex

I show how to solve math problems online during live instruction in class. This is my way of providing free tutoring for the students in my class and for students anywhere in the world. Every video is a short clip that shows exactly how to solve math problems step by step. The problems are done in real time and in front of a regular classroom. These videos are intended to help you learn how to solve math problems, review how to solve a math problems, study for a test, or finish your homework. I post all of my videos on YouTube, but if you are looking for other ways to interact with me and my videos you can follow me on the following pages through My Blog, Twitter, or Facebook.

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