Is it Proportional?

What is the constant of proportionality (in miles per hour) based on the table?

• 45
• 90
• 135
• 2

Tags

CCSS.8.EE.B.5

CCSS.8.F.B.4

What is the constant of proportionality for this table?

• 1/9
• 9
• 8

Tags

CCSS.8.EE.B.5

CCSS.8.F.B.4

Does this table represent a proportional or non-proportional relationship?  Why?

• It is proportional because y=5x + 1
• It is not proportional because it has a constant value in the equation. 

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.2

CCSS.8.F.A.3

CCSS.8.F.B.4

Is this a proportional equation?  Why?

• It is not proportional because it doesn't have a constant.
• It is not proportional because it doesn't have a constant rate of change.
• It is proportional because if x = 0, y = 0.
• It is proportional because it has a y intercept.

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

Does this graph represent a proportional relationship?  

• No, because it doesn't pass through the origin.
• Yes, because it doesn't pass through the origin.
• Yes, because it intersects the y axis.
• No, because it intersects the x axis.

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

Does this relationship proportional?

• No, because she starts jogging at nine miles.
• Yes, because if she jogs zero minutes, she would not  have gone any distance.

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3

Write an equation to represent the graph.  Is it proportional or non-proportional.

• y = 5x - 3.  It is proportional
• y - 3 = 5x.  It is proportional
• y = -5x - 3.  It is not proportional
• y = 5x - 3.  It is not proportional.

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.2

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3

Is the following equation a proportional relationship?
y = -3x+4

• Yes, because there is a +4
• No, because there is a +4

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

Is the graph proportional or non-proportional?

• Proportional
• Non-Proportional

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.3

Stella got a new internet plan.  The company charges her $0.15 for each minute plus a monthly fee of $40.  What equation would be used to calculate how much the cost is for her new internet plan?

• y=0.15x-40
• y=0.15x+40
• y=0.15-40x
• y=0.15+40x

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.1

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3