U2L7 Evaluate with Function Notation

Front

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

Back

f(1) = 2(1) + 1 = 3

Front

What is the definition of a function?

Back

A function has inputs and outputs, where every input has only ONE output.

Front

How do you write y = 2x - 3 in function notation?

Back

f(x) = 2x - 3

Front

Given h(x) = 5 - 9x, find h(8).

Back

h(8) = 5 - 9(8) = -67

Front

If a question asks you to find f(2), what does that mean?

Back

It means to let x = 2 and evaluate the function.

Front

What is function notation?

Back

Function notation is a way to represent functions using symbols like f(x).

Front

What does f(x) = 3x + 4 represent?

Back

It represents a linear function where the output is determined by multiplying x by 3 and adding 4.

Front

How do you evaluate a function at a specific value?

Back

Substitute the specific value into the function's equation.

Front

What is the output of f(x) = x^2 when x = 4?

Back

f(4) = 4^2 = 16.

Front

What does it mean for a function to be one-to-one?

Back

A function is one-to-one if every output is produced by exactly one input.