8th Grade - Determining Functions - Review

Front

Which relation is NOT a function? Options: {(1,-5), (3,1), (-5,4), (4,-2)}, {(2,7), (3,7), (4,7), (5,8)}, {(1,-5), (-1,6), (1,5), (6,-3)}, {(3,-2), (5,-6), (7,7), (8,8)}

Back

Answer: {(1,-5), (-1,6), (1,5), (6,-3)}

Front

Is this mapping a function or not a function? Options: Function, Not a Function

Back

Answer: Function

Front

Which graph does NOT pass the vertical line test? Options: Graph 1, Graph 2, Graph 3, Graph 4

Back

Answer: Graph 1

Front

A relation where every input yields one and only one output is called what? Options: Relation, Linear, Exponential, Function

Back

Answer: Function

Front

For the function {(0,1), (1,-3), (2,-4), (-4,1)}, write the domain and range. Options: D: {1, -3, -4,}
R: {0, 1, 2, -4}, D: {-4, 0, 1, 2}
R:{-4, -3, 1}, D: {0, 1, 2, 3, 4}
R:{1, -3, -4}, D: {0, 1, 2, -4}
R: {1, -3, -4, 1}

Back

Answer: D: {-4, 0, 1, 2}
R:{-4, -3, 1}

Front

What is a function?

Back

A function is a relation where each input has exactly one output.

Front

What is the vertical line test?

Back

The vertical line test is a method to determine if a curve is a function. If a vertical line intersects the curve at more than one point, it is not a function.

Front

What is the domain of a function?

Back

The domain of a function is the set of all possible input values (x-values) for the function.

Front

What is the range of a function?

Back

The range of a function is the set of all possible output values (y-values) that the function can produce.

Front

Give an example of a function.

Back

An example of a function is f(x) = 2x + 3, where each input x gives a unique output.