Algebra Rate of Change

The 7 inch candle burns at a rate of 2 inches an hour. Which equation represents the relationship between y, the height of the candle in inches, and x, the number of hours the candle burns?

• y = 2x + 7

• y = 7 - 2x

• y = 2 - 7x

• y = 7x + 2

Tags

CCSS.HSF-BF.A.1A

What is the equation of the linear function?

• y = -3x + 10

• y = -3x + 16

• y = 3x + 10

• y = 3x + 16

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Find the equation of the line that passes through the points:

(-2, 4) and (1, 10)

• y = 2x - 1

• y = -2x + 1

• y = 2x

• y = -2x

Find the equation of the line that passes through the points:
(-3, 3) and (3, -1)

• y = -⅔ x + 1 

• y = -⅔ x  

• y = ⅔ x + 1 

• y = -⅔ x +3 

The graph shows the amount of gallons leaking from a fish tank with respect to time (minutes) passing. What is the rate of change of y with respect to x?

• -3/4

• 1/2

• 0.75

• 4/3

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

• A

• B

• C

• D

Tags

CCSS.8.EE.B.5

What is the rate of change in y per unit change in x for the function 30x+5y=15.

• 1/6

• -1/6

• 6

• -6

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

• A

• B

• C

• D

Tags

CCSS.HSF-LE.A.1B

Which of the following represents the rate of change of the cost of kilowatt-hour with respect to the number of kilowatt hours used?

• $7/kwh

• $6.67/kwh

• $0.75/kwh

• $0.15/kwh

Tags

CCSS.HSF.IF.B.4

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6