Question

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Answer 1

Explanation

• Determine Function or Not Function by Graph.

We can simply find if a graph is a function or not by doing the line test.

Line Test on Graph

1. Draw a vertical line on a graph.
2. See if a vertical line intercepts one or more points on the graph.

If the line intercepts only one point, that means the graph is a function.

If the line intercepts more than one point, it is not a function but rather a relation.

Example of graphs that are not functions

• Circle Graph
• Any graphs that have more than one y-value for a single x-value. (Example x = 2 but x has more than one y value which is not a function.)

Example of graphs that are functions

• Any graphs that have "function" name. (Ex Linear Function)
• Graphs that have one x and one y value.

If you have any questions, you can comment.

Answer 2

Answer:

Vertical Line test

Step-by-step explanation:

If you can put a vertical line anywhere on the graph, and it doesn't touch more than one point, then it's a function. A function means there are no repeated x values.