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# Graphing Functions Exercises

### Example 1

Determine if the following graph shows a function.

### Example 2

Determine if the following graph shows a function.

### Example 3

Determine if the following graph shows a function.

### Example 4

Determine if the following graph shows a function.

### Example 5

Determine if the following graph shows a function.

### Example 6

Graph the following relation. Determine, using the vertical line test, if the relation is a function: x = 2 for all values of y.

### Example 7

Graph the following relation. Determine, using the vertical line test, if the relation is a function: y = -2x.

### Example 8

Graph the following relation. Determine, using the vertical line test, if the relation is a function: the set containing all pairs of the form (x, y) where x is a positive integer and y is an integer greater than x.

### Example 9

Graph the following relation. Determine, using the vertical line test, if the relation is a function: y = -x2.

### Example 10

Graph the following relation. Determine, using the vertical line test, if the relation is a function: y = 3 for every value of x.

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