7th Grade Unit 4 Proportional Relationships and Percentages

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 70% of 45, calculate 45 * 0.70.

Front

What is the formula for finding the sale price of an item?

Back

Sale Price = Original Price - Discount.

Front

What does it mean if a graph is linear?

Back

A graph is linear if it forms a straight line, indicating a constant rate of change.

Front

What is a non-linear relationship?

Back

A non-linear relationship is one where the rate of change is not constant, and the graph does not form a straight line.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

How do you find the missing number in a ratio table?

Back

To find the missing number in a ratio table, use the known ratios to set up a proportion and solve for the unknown.

Front

What is the difference between linear and non-linear relationships?

Back

Linear relationships have a constant rate of change and form straight lines, while non-linear relationships do not have a constant rate of change and can form curves.

Front

What is the equation of a proportional relationship?

Back

The equation of a proportional relationship can be expressed as y = kx, where k is the constant of proportionality.

Front

How do you express a percentage as a fraction?

Back

To express a percentage as a fraction, divide the percentage by 100 and simplify if possible.