DIRECTLY PROPORTIONAL RELATIONSHIPS

What makes a graph proportional?

• Straight Line
• The line goes through (0,0)
• Curvy line
• Straight line and passes through (0,0)

Tags

CCSS.8.EE.B.5

What is the equation y=kx for the table?

• y=1/3x
• y=3x
• y=5x
• y=1/5x

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

What does k represent in the equation y = kx?

• independent variable
• constant of proportionality
• dependent variable
• krispy kreme

Tags

CCSS.HSF-LE.A.1B

The cost of 4 pounds of grapes is $24.36. What is the constant of proportionality that relates cost in dollars, y, to the number of pounds of grapes, x?

• 6.09
• 20.36
• 8.12
• 28.36

Tags

CCSS.7.RP.A.2B

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

• 45
• 90
• 135
• 2

Tags

CCSS.7.RP.A.2B

Which representation shows a proportional relationship between x and y?

• 
• 
• 
• 

Tags

CCSS.7.RP.A.2D

A grocery store sells sliced turkey. The graph shows the relationship between the weight of the sliced turkey and the total cost of the sliced turkey. Two points, R and W, are labeled on the graph shown below.

• Point R means that the unit rate is $10.00 per

  pound.

• Point R means that the unit rate is 4 pounds

  per dollar.

• Point W means that the unit rate is $2.50 per

  pound.

• Point W means that the unit rate is 2.5 pounds

  per dollar.

What is the unit rate?

• 80 miles in 1 hours

• 20 miles in 1 hours

• 40 miles in 1 hours

• 160 miles in 1 hours

Tags

CCSS.8.EE.B.5

Identify the constant of proportionality.

• 6

• 12

• 1/6

• 1/12

• none (not proportional)

Tags

CCSS.7.RP.A.2B

How do you find k? 

• x/y
• y/x
• y=kx
• x ⋅ y

Tags

CCSS.6.EE.C.9