# Directly Proportional: Definition, Equation & Examples

Instructions:

question 1 of 3

### Write a general formula to describe the following variation: F is directly proportional to the square of d, and F = 40 when d = 5.

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### 2. John travels in a car moving at a constant speed. The distance he travels is directly proportional to time. If John travels 360 miles in 8 hours, how far will he travel in 20 hours.

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In this quiz, you'll need to solve problems that involve things being directly proportional. Additionally, you will need to identify the correct formula for a given variation.

## Quiz & Worksheet Goals

This quiz will require you to use your understanding of directly proportional items to solve problems and find:

• The volume of a sphere
• Distance traveled
• Proportionality constant and temperature of a gas

## Skills Practiced

You will also be improving your abilities related to:

• Reading comprehension - ensure that you draw the most important information from the related lesson on directly proportional variables
• Knowledge application - use your knowledge about directly proportional quantities to select a formula for a variation
• Problem solving - use acquired knowledge to solve practice problems involving objects that are directly proportional