Initial Value & Rate of Change

What is the initial value in the following equation:

y = -4x + 5

• -4

• 5

• -5

• 4

What is the rate of change in the following equation:

y = -4x + 5

• -4

• 5

• -5

• 4

Tags

CCSS.HSF.IF.B.6

CCSS.HSS.ID.C.7

A music downloading service charges a $20 flat fee per year and $0.20 per song downloaded.

What is the initial cost to use the downloading service?

• $20

• $0.20

A music downloading service charges a $20 flat fee per year and $0.20 per song downloaded.

What is the rate of change?

• $20

• $0.20

Tags

CCSS.HSF.IF.B.6

CCSS.HSS.ID.C.7

A music downloading service charges a $20 flat fee per year and $0.20 per song downloaded.

Let y represent the total cost for x song downloads. What equation represents the situation?

• y = -0.20x + 20

• y = 0.20x - 20

• y = 0.20 + 20

• y = 0.20x + 20

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.CED.A.2

CCSS.HSF.BF.A.1

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.2

A pool has 200 gallons of water in it. Water is added to the poll at a rate of 500 gallons per hour.

In this an increasing, decreasing or constant function?

• Increasing

• Decreasing

• Constant

Tags

CCSS.HSF.IF.C.7

CCSS.HSF.LE.A.2

What do we know about the slope of increasing functions?

• They have negative slope

• They have positive slope

• They have zero slope

Tags

CCSS.HSS.ID.C.7

A pool has 200 gallons of water in it.

In this an increasing, decreasing or constant function?

• Increasing

• Decreasing

• Constant

What do we know about the slope of a constant function?

• It has zero slope

• It has positive slope

• It has negative slope

A pool has 5,000 gallons of water in it. The pool is drained at a constant rate of 200 gallons per hour.

In this an increasing, decreasing or constant function?

• Increasing

• Decreasing

• Constant

Tags

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.2