Comparing Constant of Proportionality

A ____ is an equation that states two ratios are equal.

• Ratio

• Rate

• Percent

• Proportion

To determine if a set of ratios are proportional, check their _____.

• Numerators

• Denominators

• Cross Products

• Cross Quotients

Which equation below represents a proportional relationship?

• y=mx+b

• e=mc^2

• y=kx

• y=x^2

How do you solve for the constant of proportionality, k?

• divide x by y

• divide y by x

• multiply y by x

• multiply x byy

Identify the constant of proportionality.

• k = 2

• k = 3

• k = 1.50

• k = 2/3

• none (not proportional)

Write the equation for the table given.

• y = 16x

• y=8x

• y=12x

Is this table proportional or non-proportional?

• Yes

• No

Write an equation for this relationship.

• y = 18x

• y = 18.50x

• y = 22.50x

• y = 22x

Identify the constant of proportionality.

• k = 2

• k = 4

• k = 1/2

• k = 1/4

• none (not proportional)

Identify the constant of proportionality.

• k = 1/0.45

• k = 0.45

• k = -0.45

• k = -1/0.45

• none (not proportional)