8th Grade Math Functions Review

Front

What is the initial value of the equation y = 2x + 4?

Back

4

Front

What is the definition of a function?

Back

Every input has only ONE output.

Front

Is the graph of y = 2x + 4 a function or not a function?

Back

Function

Front

Which set of values represents a function? (9,5) (10,5) (9,-5) (10,-5), (3,4) (4,-3) (7,4) (3, 8), (6,-5) (7, -3) (8, -1) (9, 1), (2, -2) (5, 9) (5, -7) (1, 4)

Back

(6,-5) (7, -3) (8, -1) (9, 1)

Front

What is the rate of change and initial value for the equation y = 3x + 8?

Back

Rate of Change = 3, Initial Value = 8

Front

What is the slope of the line represented by the equation y = mx + b?

Back

The slope is represented by 'm'.

Front

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

Back

The y-intercept is the value of y when x = 0.

Front

What is a linear function?

Back

A function that graphs to a straight line.

Front

What is the domain of a function?

Back

The set of all possible input values (x-values).

Front

What is the range of a function?

Back

The set of all possible output values (y-values).