How to find domain and range of function graphs

Here’s a super simple way to find domain and range of function graphs. You can get the practice cards and the poster with the arrows free on my blog linked below.

Here I am using a pen to trace left to right to find domain, then bottom to top to find range. If my pen hits an arrow, I’ll record infinity or negative infinity as the start or end of the interval.

Here’s the blog post where the practice cards and poster are linked: https://www.scaffoldedmath.com/2015/09/learning-about-domain-and-range.html