Unit 1 Review

Use the table to create a scatter plot:

Choose all the correct responses to "How to draw a line of best fit" on a scatter plot.

• Get as many points on the line as possible

• You must fit all the points onto the line

• Try to have the same amount of points above the line as you do below the line

• You cannot draw a line of a scatter plot

Which of the following lines represents the line of best fit for the scatter plot?

• A
• B
• C
• D

In the equation y=mx+b, what does the m represent?

• slope
• y-intercept
• linear
• point-slope

What is the slope in the equation y=2x + 3?

• 2
• 3
• 5
• Cannot be Determined 

In the equation y = 2x + 4, the 2 is the...

• slope
• y-intercept
• ?

Write the equation of the trend line.

• y = 1x
• y = 1x + 100
• y = 20x
• y = 20x + 100

The graph below shows the value of a computer given the age of the computer. Which equation would best fit the data?

• y = -250x + 2000

• y = 250x + 2000

• y = -250x - 2000

• y = 2000x -250

What type of correlation does this scatter plot show?

• positive linear association
• negative linear association
• no association
• nonlinear association

What type of correlation does this graph show?

• Positive
• negative
• none
• all of the above