Evaluating Functions

Front

What is a function?

Back

A function is a relation that assigns exactly one output for each input from a set of inputs.

Tags

CCSS.8.F.A.1

Front

What does it mean to evaluate a function?

Back

To evaluate a function means to find the output value when a specific input is substituted into the function.

Tags

CCSS.HSF.IF.A.2

Front

What is the notation for a function?

Back

Functions are typically written in the form f(x), where 'f' is the name of the function and 'x' is the input variable.

Tags

CCSS.HSF.IF.A.2

Front

How do you find f(-1) for the function f(x) = -4x + 4?

Back

Substitute -1 for x: f(-1) = -4(-1) + 4 = 4 + 4 = 8.

Tags

CCSS.HSF.IF.A.2

Front

Evaluate f(-3) for the function f(x) = 2x.

Back

Substitute -3 for x: f(-3) = 2(-3) = -6.

Tags

CCSS.HSF.IF.A.2

Front

What is the value of f(0) for the function f(x) = -2x + 5?

Back

Substitute 0 for x: f(0) = -2(0) + 5 = 5.

Tags

CCSS.HSF.IF.A.2

Front

How do you evaluate f(3) for the function f(x) = x + 4?

Back

Substitute 3 for x: f(3) = 3 + 4 = 7.

Tags

CCSS.HSF.IF.A.2

Front

Evaluate f(2) for the function f(x) = -3x + 3.

Back

Substitute 2 for x: f(2) = -3(2) + 3 = -6 + 3 = -3.

Tags

CCSS.HSF.IF.A.2

Front

What is the slope-intercept form of a linear function?

Back

The slope-intercept form is given by y = mx + b, where m is the slope and b is the y-intercept.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Front

What is the y-intercept of the function f(x) = -4x + 4?

Back

The y-intercept is the value of f(0), which is 4.

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3