Graphs and Proportional Relationships

Which equation would math this proportional relationship?

• y = 45x

• y = 15x

• y = 30x

• y = 20x

What is the constant of proportionality?

• k = 15 gallons of water per minute

• k = 1/15 gallons of water per minute

• k = 15 minutes per gallon of water

• k = 1/15 minute per gallons of water

Which graph is proportional?

• A

• B

• C and D

• All of the graphs are proportional

REVIEW QUESTION
Is this table proportional or non-proportional?

• Proportional
• Non-Proportional
• both
• neither

What is the constant of proportionality?

• $3

• $4

• $2

• $9

Is the graph proportional or non proportional?

• proportional

• non proportional

Why does this graph show a non-proportional relationship?

• Because it is proportional

• It goes through the origin

• It does not go through the origin

• It is a straight line

Solve the proportion.

• 1

• 3

• 6

• 5

What is the constant of proportionality for the relationship between pages and days?

• 2

• 1 1/2

• 3

• 3/4

What is the highlighted part of the graph called?

• Origin

• x-axis

• y-axis