Line of Best Fit and Linear Equations

In the equation y=3x-5, what is the value of the y-intercept?

• 3

• -5

• -3/5

• -2

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

• 617.51 miles

• 621.09 miles

• 100 miles

• 0.19 miles

Tags

CCSS.HSF.LE.B.5

What is a line of best fit used for?

• To make predictions

• To make the graph look pretty

• To connect the points

• To make it look like you know what you are doing

Tags

CCSS.8.EE.B.5

Given that the slope is  -4 and the y intercept is -4 what is the equation of the line?

• y = 4x - 4

• y = -4x - 4

• y = -4

• y = -4x + 4

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Given that the slope is  2/3 and the y intercept is -3 what is the equation of the line?

• y = 2/3x - 3

• y = 2/3x + 3

• y = -2/3x - 3

• y = -2/3x + 3

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Identify the slope and y intercept to write an equation of the line: y = -1/3x + 1

• Slope: 1/3
  y-intercept: 1

• Slope: 1/3
  y-intercept: -1

• Slope: -1/3
  y-intercept: 1

• Slope: -1/3
  y-intercept: 0

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Find the slope of the line that passes through the points (2, 4) and (6, 12)

• 1/2

• -1/2

• 2

• -2

Tags

CCSS.8.EE.B.5

What is the slope of y=-9+6x?

• 9/6

• -9

• 6

• -6

Tags

CCSS.8.EE.B.5

What is the slope of 
6x-y=9?

• 9/6

• -9

• 6

• -6

Tags

CCSS.8.EE.B.5

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

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3