The Line of Best Fit

What is the equation for the line of best fit?

What is the equation for the line of best fit?

What is the equation for the line of best fit?

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line given and write an equation.

• y = 0x +10

• y= 0.1x+10

• y= 10x +0

• y= 0.1x +0

Write an equation for the given trend line

• y= 0.4x

• y= 2.5x

• y= -0.4x

• y= -2.5x

Tags

CCSS.8.EE.B.5

Write an equation for the trend line

• y= 0.5x

• y= 2x

• y= -0.5x

• y= -2x

Tags

CCSS.8.EE.B.5

Which two points should be used to calculate the slope?

(Select two.)

• (3, 0)

• (0, 3)

• (6, 6)

• (6, 5)

• (8, 9)

Tags

CCSS.8.EE.B.5

What is the slope of the trend line?

• 0

• 1/2

• 2

Tags

CCSS.8.EE.B.5

What should we do next to be able to write the equation of the trend line in slope-intercept form?

• Nothing! We're done! All we need is slope.

• Calculate the y-intercept.

Tags

CCSS.8.EE.B.5

Which image shows the slope formula being used correctly to find the slope between the two points (3, 0) and (6, 6)?

• 
• 
• 

Tags

CCSS.8.EE.B.5