Functions (linear)

Your parents tell you that they will give you a weekly allowance of $5 for helping out around the house. You also already have $50 saved up.

Write an equation that shows how much money you will have after w weeks assuming you don't spend any of it.

• 50w + 5

• 5w - 50

• 5 + 50

• 50 + 5w

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

The temperature in a city is decreasing by 2 degrees Fahrenheit per hour. If the current temperature is 70 degrees, write a linear equation to represent the temperature (T) after x hours.

• T = 70 * 2x

• T = 70 / 2x

• T = 70 + 2x

• T = 70 - 2x

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

A cell phone company charges $40 per month(m) plus a $35 activation fee. How much would the service cost for the first 2 months(m)?

• $110

• $75

• $115

• $80

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Find the equation that is equivalent to:
h + h + h + h + h + h + 4 + 4 = c

• 12h = c
• h + 8 = c
• 6h + 8 = c
• 8h + 6 = c

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

The basketball team runs 6 suicides at the beginning of each practice. For every minute a team member is late for practice, the late member must run additional suicides. Cyncere was 8 minutes late for practice and he had to run a total of 22 laps. What is the function rule?

• 8+6x

• 22+8x

• 22x+8x

• 6+2x

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

TRUE or FALSE?

An arithmetic sequence is an example of a linear function.

• True, because having a common difference also means it has a constant rate of change

• False, because it's not shown on a graph

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

In order to join a football club, there is a $40 startup fee and a $12 monthly fee.

Write an equation to represent the total cost, y, to participate in the football club after x months.

Do NOT use spaces, and start with y=.

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

6. The height of a plant increases by 5 inches every month. Write a linear equation to represent the height (h) in terms of the number of months (m) that have passed.

• h = m / 5

• h = 5m

• h = 5 + m

• h = 5 * m

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

The cost of a school banquet is $95 plus $15 for each person attending. Write an equation that gives the total cost as a function of the number of people attending.

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Write an linear equation to model the following:
You want to buy desserts, ice-cream is $2.50 per scoop and puppychow is $4 per bag and you want to spend $20. 

• y=2.50x+4
• 2.50x+4y=20
• y=4x+2.5

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2