This lesson teaches how to determine if an equation represents a function relationship. The criteria to be met includes everything in 'x' being mapped to a 'y', and the 'x' values should have a unique corresponding 'y' value. The first step is to isolate 'y' by solving for it, then taking the square root. The square root can result in 2 possible values for 'y,' which means that the input now has multiple possible values, making it not a function relationship between 'y' and 'x.'
Determine if the equation represents a function
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.
Questions answered by this video:
How can I tell if an equation is a function or not?
Currently 5.0/5 Stars.
This video shows an example of one equation. The instructor demonstrates why the equation does not represent a function.