Function Notation

Front

What is function notation?

Back

Function notation is a way to represent a function using symbols, typically written as f(x), where 'f' is the name of the function and 'x' is the input variable.

Front

If f(x) = 2x + 3, what is f(5)?

Back

f(5) = 2(5) + 3 = 10 + 3 = 13.

Front

What does f(x) = x - 9 represent?

Back

It represents a linear function where the output is obtained by subtracting 9 from the input value x.

Front

If f(x) = x + 7, what is f(1)?

Back

f(1) = 1 + 7 = 8.

Front

What is the output of f(x) when f(x) = 3x - 12 and x = 4?

Back

f(4) = 3(4) - 12 = 12 - 12 = 0.

Front

If g(x) = 3x + 1, what is g(2)?

Back

g(2) = 3(2) + 1 = 6 + 1 = 7.

Front

What is the relationship between f(x) and y?

Back

f(x) is the same as y; it represents the output of the function for a given input x.

Front

If f(x) = -6, what is the value of x when f(x) = 3x - 12?

Back

Set -6 = 3x - 12, then solve: 3x = 6, x = 2.

Front

What does it mean to evaluate a function?

Back

To evaluate a function means to find the output value for a specific input value.

Front

If f(x) = x^2, what is f(3)?

Back

f(3) = 3^2 = 9.