Representations of Linear Functions

The table below shows the cost of different numbers of goldfish at a pet store. The cost is a linear function of the number of goldfish. Which statement describes the rate of change of this function?

• The cost increases $0.30 each time 1 goldfish is added.

• The cost increases $1.50 each time 1 goldfish is added.

• The cost increases $3.00 each time 5 goldfish are added.

• The cost increases $6.00 each time 5 goldfish are added.

Tags

CCSS.HSF-LE.A.1B

The cost to rent a paddleboat at the city park includes an initial fee of $7.00, plus $3.50 per hour. Which equation models the relationship between the total cost, y, and the number of hours, x, that the paddleboat is rented?

• y = 3.5x + 7

• y = 7x + 3.5

• y = x/7 + 3.5

• y = x/3.5 + 7

Tags

CCSS.6.EE.C.9

The relationship between temperature in degrees Fahrenheit and degrees Celsius is shown in the graph below. What is the meaning of the y-intercept?

• the change in degrees Fahrenheit for every change of one degree Celsius

• the change in degrees Celsius for every change of one degree Fahrenheit

• the temperature in degrees Fahrenheit when the temperature is zero degrees Celsius

• the temperature in degrees Celsius when the temperature is zero degrees Fahrenheit

Tags

CCSS.8.EE.B.5

What is an equation for the line that passes that passes through the points (1,1) and (3,5)?

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

When given two points and asked to write an equation, what is your first step?

• Find the slope
• Find the y-intercept
• Find the x-intercept
• Write the equation

Write the an equation for the graph shown.

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

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

What is the function of the table?

• y=3x+1
• y=4x-2
• y=x+1
• y=x+7

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Write the equation of a line that passes through the point (1,4) and has a slope of 9.

• y= 9x-4
• y= 9x-5
• y= 9x+4
• y= 9x+5

Find the slope of the line that passes through:
(10, 1) and (5, 2)

• 1/5
• -1/5
• 5
• -5

Tags

CCSS.8.EE.B.5

Ace Telecommunications charges $0.12 per minute of phone use plus a monthly service fee of $8.00 for it phone service. Which equation can be used to find c, the total cost for one month when m, minutes are used?

• c = 0.12m + 8m

• c = 8m + 0.12m

• c = 0.12m + 8

• c = 0.20m

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2