CCSS.Math.Content.8.F.B.4

An hourglass is turned over with the top part filled with sand. After 3 minutes, there are 855 mm of sand in the top half. After 10 minutes, there are 750 mm of sand in the top half. Which equation represents this situation?

• y=285x
• y= -10.5x+900
• y= -15x+900
• y=75X

Tags

CCSS.Math.Content.8.F.B.4

What is the slope in the picture?

• Positive
• Negative
• Zero
• Undefined

Tags

CCSS.Math.Content.8.F.B.4

 Write the equation of the line that passes through the points (0, -5) and (4, 3)

• y=2x-5
• y=1/2x-5
• y=2x+5
• y=1/2x+5

Tags

CCSS.Math.Content.8.F.B.4

Which formula is used to find the explicit equation for arithmetic sequences?

• a_n = a_(n-1) + d
• a_n = a_(n-1) * r
• a_n = a₁ + d(n-1)
• a_n = a₁ * r^n-1

Tags

CCSS.Math.Content.8.F.B.4

Which equation is parallel to:
y = 5/7x +2

• y = -7/5x +1
• y = 7/5x +4
• y = -5/7x -3
• y = 5/7x +5

Tags

CCSS.Math.Content.8.F.B.4

.Write the equation of the line where m = -1 and passes through the point (-2, 4)
(y = mx + b)

• x = -2
• y = 4x - 2
• b = 2
• y = -1x + 2

Tags

CCSS.Math.Content.8.F.B.4

How should this function be classified?

• Linear

• Exponential

• Quadratic

• None of the above

Tags

CCSS.Math.Content.8.F.B.4

Which function best models the situation: A bathtub filling with water as the faucet steadily drips

• Linear

• Exponential

• Quadratic

• None of the above

Tags

CCSS.Math.Content.8.F.B.4

What is the equation of the parallel to the line shown and passing through the point (1,-1)?

• $y=2x+1$

• $y=2x+3$

• $y=2x-1$

• $y=2x-3$

Tags

CCSS.Math.Content.8.F.B.4

Amelia has $100 in her savings account and plans on solving $20 per week. Write an equation to represent this situation.

• y = 100x

• y = 20x

• y = 20x + 100

• y = 100x + 20

Tags

CCSS.Math.Content.8.F.B.4