関数: グラフが関数かどうかを判断します。

Function or not a function

Sketch Graph of Relation Not Function

Function or Not A Function (Graphs)

FUNCTION OR NOT FUNCTION (GRAPH)

機能の識別

Functions vs Relations on a Graph

グラフから定義域と値域を見つける

Algebra Basics: What Are Functions? - Math Antics

8 Examples of Functions Vs. Not a Function | Lulumath

Using the vertical line test to determine if a graph is a function or not

関数か関数でないかの例題と練習問題（点集合と垂直線テスト）

Domain and Range of a Function From a Graph

How to tell if a graph is a function or not

[Tagalog] Relation: Function or Not a function #OrderedPair #Equation #Graph #TableofValues #Math8