Writing Equations of Trend Lines

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

• (1,0) (6,8)

• (8,6) (0,1)

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.B.4

CCSS.8.SP.A.3

Find the slope between (1,0) and (6,8)

• m = -8/5

• m = 8/5

• m = 7/6

Tags

CCSS.8.EE.B.5

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

• (9,0) (3,8)

• (0,9) (8,3)

Find the slope between (0,9) and (8,3)

• m = 6/8

• m = -3/4

• m = 3/4

What is the y-intercept of the trend line for the scatter plot shown?

• 10

• -3/4

• 5

• 9

If m = -3/4 and b = 9, what is the equation of the trend line in y= mx + b?

• 0 = -3/4 (9) +9

• y = -3/4 x + 9

• y = -3/4 x - 9

• y = 3/4 + 9

Error Analysis. If m = -1 and b = 8, which of the following is INCORRECT?

• y = -1x + 8

• y = -x + 8

• y = -1 + 8

What is missing in this equation when the directions were to write an equation in slope intercept form? y = -1 +8

• the x is missing after the negative 1

• it isn't missing anything

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3