Day 81 - Functions, D & R Review for Benchmark

Front

What is a function?

Back

A function is a relation where each input (x-value) has exactly one output (y-value).

Front

How can you determine if a graph represents a function?

Back

Use the vertical line test: if a vertical line intersects the graph at more than one point, it is not a function.

Front

What is the domain of a function?

Back

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

Front

What is the range of a function?

Back

The range is the set of all possible output values (y-values) for the function.

Front

Given the function {(0,1), (1,-3), (2,-4), (-4,1)}, what is the domain?

Back

D: {0, 1, 2, -4}.

Front

Given the function {(0,1), (1,-3), (2,-4), (-4,1)}, what is the range?

Back

R: {1, -3, -4}.

Front

What does it mean if a relation is not a function?

Back

It means that at least one input (x-value) is associated with more than one output (y-value).

Front

Identify the domain of the relation {(-6,14), (0,32), (2,38), (4,44)}.

Back

D: {-6, 0, 2, 4}.

Front

What is the output of the function f(x) = 2x + 3 when x = 4?

Back

f(4) = 2(4) + 3 = 11.

Front

What is the output of the function f(x) = x^2 when x = -3?

Back

f(-3) = (-3)^2 = 9.