Functions and Relations Flashcardziz Review

Front

What is an ordered pair?

Back

An ordered pair is a pair of numbers used to locate a point on a coordinate plane, written in the form (x, y).

Front

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

Back

A relation is a function if every input (x-value) has exactly one output (y-value).

Front

What is the coordinate plane?

Back

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

Front

What are the four quadrants of the coordinate plane?

Back

Quadrant I: (+, +), Quadrant II: (-, +), Quadrant III: (-, -), Quadrant IV: (+, -).

Front

How do you identify the quadrant of a point (x, y)?

Back

Determine the signs of x and y: (+, +) is Quadrant I, (-, +) is Quadrant II, (-, -) is Quadrant III, and (+, -) is Quadrant IV.

Front

What is the y-axis?

Back

The y-axis is the vertical line on the coordinate plane where x = 0.

Front

What is the x-axis?

Back

The x-axis is the horizontal line on the coordinate plane where y = 0.

Front

What does it mean for a table to represent a function?

Back

A table represents a function if each input value corresponds to one and only one output value.

Front

What is the significance of the point (0, 0)?

Back

The point (0, 0) is called the origin, where the x-axis and y-axis intersect.

Front

How do you plot the point (5, 2) on a coordinate plane?

Back

Start at the origin, move 5 units to the right (x-axis), and then 2 units up (y-axis).