Constant of Proportionality (for a grade)

Identify the constant of proportionality.

• k = 2x

• k = 2

• k = 4

• none (not proportional)

Identify the constant of proportionality.

• k = 6

• k = 12

• k = 1/6

• k = 1/12

• none (not proportional)

Identify the constant of proportionality.

• k = 5

• k = 1/5

• k = 1

• k = 2.5

• none (not proportional)

Identify the constant of proportionality.

• k = 1/90

• k = 90

• k = 1/30

• k = 30

• none (not proportional)

Which best describes the relationship represented in this table?

• proportional
• non-proportional

Does the table represent a proportional relationship? If so, what is the constant?

• Yes, the constant is 1/3.

• Yes, the constant is 3.

• Yes, the constant is 5.

• No, there is no constant.

Write the equation for the table given.

• y = 1/3x

• y = 0x

• y = 1/2x

• y=3x

Write an equation for the proportional relationship in the table.

• y=18.50x

• y=18x

• y=22.50x

• y=22x

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

• 2 mph
• 45 mph
• 90 mph
• 135 mph

Using the equation y=kx, tell what the k is in this graph. (Remember that k is the constant of proportionality or unit rate.)