8th Grade Math Review

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities where one of the quantities is expressed as a quantity of one. For example, if a car travels 60 miles in 1 hour, the unit rate is 60 miles per hour.

Front

How can you determine if a table represents a proportional relationship?

Back

A table represents a proportional relationship if the ratio of the two quantities remains constant. This means that as one quantity increases, the other quantity increases at a consistent rate.

Front

What is Pi?

Back

Pi (π) is an irrational number approximately equal to 3.14, representing the ratio of the circumference of a circle to its diameter.

Front

What does slope represent in a graph?

Back

Slope represents the rate of change between two variables in a linear relationship. It is calculated as the rise (change in y) over the run (change in x).

Front

What is a linear relationship?

Back

A linear relationship is a relationship between two variables that can be represented by a straight line on a graph. The equation of a linear relationship is typically in the form y = mx + b.

Front

What is a non-linear relationship?

Back

A non-linear relationship is a relationship between two variables that does not form a straight line when graphed. This can include curves or other shapes.

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship where two quantities maintain a constant ratio. For example, if you double one quantity, the other quantity also doubles.

Front

What is the formula for calculating slope?

Back

The formula for calculating slope (m) is m = (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are two points on the line.

Front

What is the difference between rational and irrational numbers?

Back

Rational numbers can be expressed as a fraction of two integers, while irrational numbers cannot be expressed as a simple fraction. Examples of irrational numbers include √2 and π.

Front

What does it mean for a relationship to be scattered?

Back

A scattered relationship in a scatterplot indicates that there is no clear pattern or correlation between the two variables being plotted.