Scatterplot Slope and Trend Lines

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

• A

• B

• C

• D

Which line appears to fit the data better?

• line A

• line B

Which of the following could be the equation of the trend line for this graph?

• There is no trend line because there is no association

Which of the following would be the most accurate equation for the scatter plot?

• y = -2x - 7

• y = -x + 7

• y = 3x + 7

• y = 25x + 7

Find the slope for the trend line.

• 2

• 1/2

• -2

• -1/2

What ordered pairs would you use to find the slope for the trend line?

• (9,0) (3,8)

• (0,9) (8,3)

What ordered pairs would you use to find the slope for the trend line?

• (1,0) (6,8)

• (8,6) (0,1)

What is the slope of this trend line?

• 70

• -3

What is the correlation between length of running start and distance of jump?

• positive:  the further you run the further you jump

• negative: the less you run the less distance of your jump

• positive: the further your running start the less your distance

If m = 8/5 and b = -8/5, what is the equation of the trend line in y= mx + b?

• 0 = 8/5 (1) - 8/5

• y = -8/5 x + 8/5

• y = 8/5 x - 8/5

• y = mx + b