Coordinates Trick: Table, Graph, Domain & Range – Easy Math Hack!

In this quick and fun math video, we take a set of coordinate points and turn them into a T-chart (table), plot them on a graph, and figure out the domain and range. Then we finish by asking the big question: Is this a function? If you've ever been unsure how to read a relation or check if it’s a function, this example will clear it up fast. Plus, there’s a neat math trick to remember what to repeat (and what not to) when listing your domain and range. Grab a pencil and follow along!

Timestamps:
00:00 – What we’re doing in this video
00:10 – Turning a relation into a table
00:28 – Plotting the points on a graph
00:43 – Finding the domain
01:13 – Finding the range
01:56 – What to do with repeated numbers
02:01 – Is it a function?
02:12 – How to check with a graph

Whether you're learning this for the first time or just need a quick refresher, this video example is a great way to lock it in. 💪