Unit 13 Test

What type of correlation does this graph have?

• Negative

• no association

• positive

What type of correlation does this graph have?

• positive

• negative

• none

• all of the above

Based on the graph, if Joe earned $400, how many hours did he work?

• 25 hours

• 35 hours

• 45 hours

• 15 hours

What is the equation of the line of best fit?

• y = -25x + 170

• y = -5/8x + 170

• y = 25x + 170

• y = 5/8x + 170

What is the line of best fit?

• y = 5/3x + 375

• y = 1/3x + 475

• y = 5/3x + 3

• y = 1/3x + 375

Is the sequence arithmetic: 37, 31, 25, 19, ...

• Yes

• No

Is the sequence arithmetic: -3, 3, -3, 3, ...

• Yes

• No

Is the sequence arithmetic: 17, 9, 1, -7, ...

• Yes

• No

Find the common difference: -34, -29, -24, -19, ...

• d = -5

• d = 5

• d = -6

• d = 6

Identify the common difference.
97, 86, 75, 64, ...

• 8

• 11

• -11

• -8