Pre-Calculus | Unit 1 | What is a Function? (Domain, Range & Function Notation)

In this video we cover one of the most important topics in Pre-Calculus what is a function? By the end of this video you will know: ✔ The definition of a function ✔ The difference between domain and range ✔ How to read and use function notation — f(x) ✔ How to use the vertical line test This is Video 1 of the Pre-Calculus Unit 1 playlist. Every video follows the order your class teaches it so you can study along all year. ⏱ Chapters 0:00 – Intro 0:43 – What is a function? 2:02 – Function notation f(x) 2:23 – Domain & range 3:33 - How to solve a function 4:35 – Vertical line test 5:25 – Practice problems 7:11 – Recap 📚 Pre-Calculus Playlist → https://www.youtube.com/watchv=yCN3On_4WE8&list=PLi39iiOi5QUYA0hQ1_r0h5tKAkrp-JB_I If this helped you, subscribe so you never miss a new topic — new videos drop every week covering math, science, and engineering units students actually need. 🔔 Subscribe for more: @STEMBoard