Linear Functions

Diego is studying how hot dog sales at a ball park are related to attendance. To collect his data, Diego records the attendance at each game as an input value and hot got sales at each game as an output value. Which statement best describes this situation?

• The domain is attendance and it is continuous.

• The domain is attendance and it is discrete.

• The domain is hot dog sales and it is continuous.

• The domain is hot dog sales and it is discrete.

The domain of the function

 $y=0.2x-5$  is 5, 10, 15, 20.  What is the range of this function?

• 20, 15, 10, 5

• 4, 3, 2, 1

• 0, 5, 10, 15

• -4, -3, -2, -1

A set of ordered pairs where each input is paired with exactly one output is called a ____.

• function

• domain

• relation

• range

Find the domain and range represented by the graph.

• domain: 1, 2, 3, 4; range: –2, 0, 2, 4

• domain: –2, 0, 2, 4; range: –1, 0, 1, 2

• domain: –1, 0, 1, 2; range: –2, 0, 2, 4

• domain: 1, 2, 3, 4; range: –1, 0, 1, 2

Use the graph to write a linear function that relates y to x.

• $y=\frac{2}{5}x+6$

• $y=-\frac{5}{2}x-6$

• $y=-\frac{2}{5}x-6$

• $y=-\frac{2}{5}x+6$

Use the graph to write a linear function that relates y to x.

• $y=x-2$

• $x=y-2$

• $x=-2$

• $y=-2$

Graph the function. Describe the domain and range.

• 
• 
• 
• 

Graph the function. Compare the graph to the graph of y = | x |. Describe the domain and range.

 $y=\left|x-2\right|$  

• 
• 
• 
• 

Find the common difference of the arithmetic sequence.

 $1\ \frac{2}{3},\ 1\ \frac{7}{9},\ 1\ \frac{8}{9},\ 2$  

•  $\frac{1}{3}$  

•  $1\ \frac{2}{3}$  

•  $-\frac{1}{9}$  

•  $\frac{1}{9}$  

Find the next three terms of the arithmetic sequence.

–9, –17, –25, –33, ...

• –9, –17, –25

• –40, –48, –56

• –41, –49, –57

• –42, –50, –58