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

Write an equation that models the following situation:
Samantha's hair was known to grow very rapidly. It began at a length of 6 in and grew at a rate of 14% a week.

• y=6(0.14)^x
• y=6(1+14)^x
• y=6(1.14)^x
• y=6(0.86)^x

Tags

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

Find the slope of the line that passes through:
(-3, -4) and (7, 6)

• 0
• Undefined
• -1
• 1

Tags

CCSS.Math.Content.8.EE.B.6

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

Find the slope of the line that passes through:
(-2, 8) and (0, 8)

• 0
• -2
• 2
• 1/2

Tags

CCSS.Math.Content.8.EE.B.6

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

An antibiotic is introduced into a colony of 12,000 bacteria during a laboratory experiment. The colony is decreasing by 14.9% per minute. Which function can be used to model the number of bacteria in the colony after x minutes?

• f(x) = 12000(1 + 14.9)^x
• f(x) = 12000(1 - 14.9)^x
• f(x) = 12000(1 + 0.149)^x
• f(x) = 12000(1 - 0.149)^x

Tags

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

Which equation generates a graph containing
the set of ordered pairs shown below?
{(−15, 12), (−5, 8), (5, 4), (10, 2)}

• y = -3/5 x + 3
• y = -2/5 x + 6
• y = -1/5 x + 9
• y = -4/5 x

Tags

CCSS.Math.Content.8.EE.B.6

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

1. A plant is 5cm tall and growing at a rate of 3cm a month.

• y = 5 + 3
• y = 5x + 3
• y = 3x + 5

Tags

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

Bob has $150 in his savings account and saves $40 per month.

• y = 150 + 40
• y = 40x + 150
• y = 150x + 40

Tags

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

What is the algebraic equation for this table?

• y = x + 3
• y = 3x
• y = x ÷ 3
• y = x - 3

Tags

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

Find the slope from the table.

• -4
• 1
• 4
• -2

Tags

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

A restaurant sells pizza for the prices in the data table.  Calculate the linear regression equation of the data.

• y = 1.5x + 12
• y = 12x + 1.5
• y = 0.67x - 8
• y = -8x + 0.67

Tags

CCSS.Math.Content.HSS.ID.C.7

CCSS.Math.Content.HSA.CED.A.2

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