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

Given the equation y=-4x+5, what is the y-intercept?

• -4
• x
• 5
• 4

Tags

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

Which of the following functions shows an initial amount of $15 and an increase of 35% each year?

• y = 15(35)^x
• y = 15(1.35)^x
• y = 15(0.35)^x
• y = 35(1.15)^x

Tags

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

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

• 1/2
• -1/2
• 2
• -2

Tags

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

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

In the equation y = 14x, what is the constant of proportionality?

• y

• x

• 14

• y=14x

Tags

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

The annual profits for a company are given in the following table, where x represents the number of years since 1992, and y represents the profit in thousands of dollars. Write the linear regression equation that represents this set of data, rounding all coefficients to the nearest hundredth. Using this equation, estimate the year in which the profits would reach 378 thousand dollars.

• 2029

• 2014

• 2003

• 8753

Tags

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

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

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

The function shows the growth of a fruit fly population. f(t) is the number of fruit flies after t days. 
What is the growth factor for the fruit fly population?

• $100$

• $1.05$

• $105$

•  $5$ 

Tags

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

Michael started a savings account with $300. After 4 weeks, he had $350, and after 9 weeks, he had $400. What is the rate of change of money in his savings account per week?

• $44/week

• $10/week

• $20/week

• $11/week

Tags

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

Calculate the slope of a line that passes through these points. (2,0)(7,3)

• 1/3

• 3/5

• 5/3

• 5

Tags

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

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

Speedy Boat Rental charges a $15 deposit fee plus $2 for each hour of use to rent a paddle boat. Write an equation to represent this situation.

• y = 2x + 15

• x = 15y + 2

• y = 15x+ 2

Tags

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

Emily sells greeting cards. The graph models the linear relationship between the number of boxes of cards she sells and her profit.

Which of these best describes the profit Emily makes from selling these cards?

• $7.50 per box

• $10.00 per box

• $4.00 per 30 boxes

• $3.00 per 4 boxes

Tags

CCSS.Math.Content.8.EE.B.5

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