Proportional

Write the equation of the graph. Use the format y = kx.

Is the graph proportional?

• Yes

• No

What is the constant of proportionality?

• k = 3

• k = 1/3

• k = 3x

• k = 1/3x

Write an equation for the relationship between x and y. Use format y = kx.

Newtown middle school spends 11 dollars on every yearbook it buys. Is the amount of money NMS spends on yearbooks proportional to the total number of yearbooks NMS buys?

• Yes

• No

What is the constant of proportionality for this table?

• $1/9 per hour

• $9 per hour

• $8 per hour

• $18 per hour

Albert wants to buy some pens. He compares 4 different packs of pens. Which two packs of pens have the same cost per pen?

• Packs 1 and 2

• Packs 1 and 3

• Packs 2 and 4

• Packs 1 and 4

Determine the constant of proportionality for the table. Express your answer as y = kx

• y = 1/2x

• x = 1/2y

• y = 2x

• k = x

The constant of proportionality in the equation y = ½x is _______. 

• x

• y

• 1/2

• 2

Does this table show a proportional relationship?

• Yes, 4 is the constant of prportionality

• Yes, 5 is the constant of prportionality

• No, the quantities are not proportional.