関数: グラフが関数かどうかを判断します。
What Is a Function? | Precalculus
Determine if a Graph Represents a Function of x (Vertical Line Test)
例1: 垂直線テストを使用してグラフが関数を表しているかどうかを判断する
Tables and Graphs that Represent y as a Function of x
Determine whether an equation determines y as a functions of x
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Does Your Graph Represent a Function? What About Its Inverse? - - - - MTH-3051
Ways to Identify if a Graph represents a Function
y は x の関数ですか?
Which graph represents the function?
Functions and Graphs: Checking if an Equation Represents a Function
Does each graph represent a function?
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Master how to determine if a graph is a function or not
Which of the following graphs represent functions that have inverse functions? | Plainmath
How to determine if 3 graphs represent a function and determine domain range
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Using the vertical line test to determine if a graph is a function or not
Which table shows y as a function of x