Independent and Dependent Variables

Front

What is an independent variable?

Back

An independent variable is a variable that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Front

What is a dependent variable?

Back

A dependent variable is a variable that is measured and affected in an experiment. It depends on the independent variable.

Front

In a graph, which axis represents the independent variable?

Back

The x-axis represents the independent variable.

Front

In a graph, which axis represents the dependent variable?

Back

The y-axis represents the dependent variable.

Front

What does it mean for a relationship to be proportional?

Back

A proportional relationship means that two quantities maintain a constant ratio, and the graph of the relationship is a straight line that passes through the origin.

Front

What is an example of an independent variable in a study about plant growth?

Back

The amount of sunlight the plants receive.

Front

What is an example of a dependent variable in a study about plant growth?

Back

The height of the plants after a certain period.

Front

How can you identify a proportional relationship from a table of values?

Back

If the ratio of the dependent variable to the independent variable is constant, it indicates a proportional relationship.

Front

What is the formula for finding the slope of a line in a graph?

Back

Slope = (change in y) / (change in x).

Front

What is the significance of the origin in a graph?

Back

The origin (0,0) is significant because it represents the starting point of the graph, where both the independent and dependent variables are zero.