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# Functions

# Linear Functions and Equations Exercises

### Example 1

Is the following graph a linear function?

### Example 2

Is the following graph a linear function?

### Example 3

Is the following graph a linear function?

### Example 4

Is the following graph a linear function?

### Example 5

Is the following graph a linear function?

### Example 6

Determine whether the following is a linear equation: 4*x* + 2*y* = 5.

### Example 7

Determine whether the following is a linear equation: *x* = 4.

### Example 8

Determine whether the following is a linear equation: *x*^{2} + *y*^{2} = 4.

### Example 9

Graph the following linear equation: *y* = -1.

### Example 10

Graph the following linear equation: *x* = -1.

### Example 11

Graph the following linear equation: *y* = - 3*x* – 1.

### Example 12

Graph the following linear equation: *y* = 2*x* – 3.

### Example 13

Graph the following linear equation: *y* = -*x* + 5.