Functions as Equations flashcard

Front

What is the definition of a function?

Back

Every input has only one output.

Tags

CCSS.8.F.A.1

Front

If f(x) = 2x + 1, what would be your first step to find f(1)?

Back

Plug a 1 in for all the x's.

Tags

CCSS.HSF.IF.A.2

Front

If f(x) = 2x + 1, what would the function look like once you substitute in a 1 to find f(1)?

Back

f(1) = 2 (1) + 1.

Tags

CCSS.HSF.IF.A.2

Front

f(x) is the same thing as ______.

Back

y.

Tags

CCSS.HSF.IF.A.1

Front

The speed of the baseball is a function of the time since the baseball was hit by a bat. What does f(2) = 80 represent in this situation?

Back

After 2 seconds the baseball is traveling at 80mph.

Tags

CCSS.HSF.IF.A.2

Front

What is the domain of a function?

Back

The set of all possible input values (x-values).

Front

What is the range of a function?

Back

The set of all possible output values (y-values).

Front

What does it mean for a function to be linear?

Back

It can be represented by a straight line on a graph.

Tags

CCSS.8.F.A.3

Front

What is the slope of a line in a function?

Back

The rate of change of the function, representing how much y changes for a change in x.

Tags

CCSS.8.EE.B.5

Front

What is the y-intercept of a function?

Back

The value of y when x = 0.