Proportional Relation

Does the table represent a proportional relationship?

• Yes.

• No.

Identify the constant of proportionality. Write an equation to relate weight, w, to the price, p.

• k = .45; p = .45w

• k = .22; p = .22w

• k = 45; p = 45w

• k = 22; p = 22w

Is this graph proportional?

• Yes

• No

In the equation y = 14x, what is the constant of proportionality?

• y

• x

• 14

• 1/14

Two quantities are in a ​ (a)   if the two quantities vary and have a constant ratio between them.

• proportional relationship

• proportional

• unit rate

• nonproportional

• constant of proportionality

Two quantities are ​ (a)   if the ratios comparing them are equivalent.

• proportional

• nonproportional

• constant of proportionality

• proportion

The table is​ ​ (a)   , because it ​ (b)   a constant ratio.

If so, what is the constant of proportionality?​ (c)  

• non-proportional

• proportional

• does not have

• has

• no constant

• k=14

Answer explanation

A proportional relationship means that two quantities maintain a constant ratio. In this case, the relationship does not exhibit a constant ratio, hence the answer is No.

Write how to find the proportion of

2:8 :: 25:625

(Do not give space first right the means than the extremes.)

Mathematical Equivalence

ON

Which situation represents a proportional relationship?

Select the correct answer ○ in each row.

When two ratios are equal they are .

(a)  

• Proportional

• Ratio

• Rate

• Unit Rate