Math 180 Proportional and Linear Relationships B1

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other quantity is constant.

Front

How do you calculate a percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 15% of 200, calculate 200 * 0.15 = 30.

Front

What does it mean to find a percentage of a total?

Back

Finding a percentage of a total means determining how much a certain percentage represents out of the total amount.

Front

If Lea earns $12 per hour, how much will she earn for 5 hours?

Back

Lea will earn $12 * 5 = $60 for 5 hours.

Front

What is the formula to find the total amount from a percentage?

Back

The formula is: Total Amount = (Part / Percentage) * 100.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide the percentage by 100. For example, 65% becomes 0.65.

Front

What is the relationship between hours worked and wages earned in a linear function?

Back

In a linear function, the relationship between hours worked and wages earned is represented by a straight line, where the slope indicates the rate of pay per hour.

Front

How do you find the total number of students tutored if given a percentage?

Back

To find the total number of students tutored, calculate the percentage of the total students and add any additional students tutored.

Front

What is the meaning of '65% of the vote'?

Back

'65% of the vote' means that 65 out of every 100 votes were cast for a particular candidate.

Front

How do you determine the total gallons of water needed for a group of people?

Back

To determine the total gallons of water needed, multiply the number of people by the amount of water needed per person.