Introduction to Functions

Front

What is a function?

Back

A function is a relation that assigns exactly one output (y-value) for each input (x-value).

Tags

CCSS.8.F.A.1

Front

What is the vertical axis on a coordinate plane called?

Back

The vertical axis is called the y-axis.

Tags

CCSS.5.G.A.1

Front

What is the horizontal axis on a coordinate plane called?

Back

The horizontal axis is called the x-axis.

Tags

CCSS.5.G.A.1

Front

What does it mean for a relation to be a function?

Back

A relation is a function if each x-value has only one corresponding y-value.

Tags

CCSS.8.F.A.1

Front

Identify if the following set is a function: {(-2, 4), (1, 5), (2, 6), (1, 7), (3, 8)}

Back

Not a Function, because the x-value 1 has two different y-values (5 and 7).

Tags

CCSS.8.F.A.1

Front

What is a solution to the equation y = 2x - 7?

Back

(2, -3) is a solution because when x=2, y=2(2)-7=-3.

Front

What is the definition of a coordinate plane?

Back

A coordinate plane is a two-dimensional surface formed by the intersection of a vertical line (y-axis) and a horizontal line (x-axis).

Tags

CCSS.5.G.A.1

Front

What is the range of a function?

Back

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

Front

What is the domain of a function?

Back

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

Front

How can you determine if a relation is not a function?

Back

If any x-value is paired with more than one y-value, the relation is not a function.

Tags

CCSS.8.F.A.1