8th Grade Functions Review

Front

What is the definition of a function?

Back

A function is a relation where every input has only ONE output.

Front

What indicates a linear relationship in a table of values?

Back

A linear relationship is indicated by a constant rate of change.

Front

How can you tell if a table does not represent a linear relationship?

Back

If the rate of change is not constant, it does not represent a linear relationship.

Front

What is an example of a situation that represents a non-linear relationship?

Back

A monkey swings from a high branch to a lower branch, climbs along the branch, then jumps to a higher branch.

Front

Convert the equation 2x + y = 24 to slope-intercept form.

Back

y = -2x + 24.

Front

What is the slope of the line represented by the equation y = -2x + 24?

Back

The slope is -2.

Front

What does the y-intercept represent in a linear equation?

Back

The y-intercept is the point where the line crosses the y-axis.

Front

How do you find the y-intercept from the equation y = mx + b?

Back

The y-intercept is the value of b in the equation.

Front

What is the difference between independent and dependent variables in a function?

Back

The independent variable is the input (x), and the dependent variable is the output (y).

Front

What is a real-world example of a function?

Back

The relationship between the amount of money earned (output) and hours worked (input) is a function.