8th grade functions flashcard

Front

What is a function?

Back

A function is a relation that assigns exactly one output for each input.

Tags

CCSS.8.F.A.1

Front

What is the vertical line test?

Back

The vertical line test is a method to determine if a graph represents a function. If a vertical line crosses the graph at more than one point, it is not a function.

Front

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

Back

A mapping is a function if each input is paired with exactly one output.

Tags

CCSS.8.F.A.1

Front

What is an ordered pair?

Back

An ordered pair is a pair of numbers used to represent a point in a coordinate system, typically written as (x, y).

Tags

CCSS.5.G.A.1

Front

Is the set of ordered pairs (1, 2), (2, 3), (3, 4) a function?

Back

Yes, this set is a function because each input (x-value) is unique.

Tags

CCSS.8.F.A.1

Front

Is the set of ordered pairs (1, 2), (1, 3), (2, 4) a function?

Back

No, this set is not a function because the input '1' is paired with two different outputs.

Tags

CCSS.8.F.A.1

Front

What is a linear function?

Back

A linear function is a function that graphs to a straight line and has a constant rate of change.

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Front

What is the slope of a line?

Back

The slope of a line is a measure of its steepness, calculated as the change in y divided by the change in x (rise/run).

Tags

CCSS.8.EE.B.5

Front

What is the y-intercept?

Back

The y-intercept is the point where a line crosses the y-axis, represented as (0, y).

Front

Write the equation of a function that represents a constant rate of change of 5.

Back

y = 5x.

Tags

CCSS.HSF-LE.A.1B