7th Topic 2 and 3 Flashcard

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 is constant. This means that as one quantity increases or decreases, the other quantity does so in a consistent manner.

Front

What does it mean if a graph does not pass through the origin?

Back

If a graph does not pass through the origin (0,0), it indicates that the relationship represented is not proportional. In a proportional relationship, the line must pass through the origin.

Front

How do you calculate 30% of a number?

Back

To calculate 30% of a number, multiply the number by 0.30. For example, 30% of 50 is calculated as 50 * 0.30 = 15.

Front

What is the formula to find the constant of proportionality?

Back

The constant of proportionality can be found using the formula: k = y/x, where k is the constant, y is the dependent variable, and x is the independent variable.

Front

If one meter is approximately 3.28 feet, how do you set up a proportion to convert feet to meters?

Back

Front

What is the value of 30% of $30?

Back

30% of $30 is calculated as $30 * 0.30 = $9.

Front

What is the significance of the y-intercept in a graph?

Back

The y-intercept is the point where the graph intersects the y-axis. It represents the value of the dependent variable when the independent variable is zero.

Front

How do you find the total cost after applying a discount?

Back

To find the total cost after applying a discount, subtract the discount amount from the original price. For example, if an item costs $30 and has a 30% discount, the discount is $9, so the total cost is $30 - $9 = $21.

Front

What does it mean for two quantities to be directly proportional?

Back

Two quantities are directly proportional if they increase or decrease together at a constant rate, meaning their ratio remains the same.

Front

What is the formula for calculating a percentage of a number?

Back

The formula for calculating a percentage of a number is: (percentage/100) * number.