Unit 7 Vocabulary

A reference line drawn on a graph (you can measure from it to find values).

• axis (graph)

• coordinates

• coordinate plane

• ordered pairs

A set of values that show an exact position.

• axis (graph)

• coordinates

• coordinate plane

• ordered pairs

The plane containing the "x" axis and "y" axis.

• axis (graph)

• coordinates

• coordinate plane

• ordered pairs

Two numbers written in a certain order.

Usually written in parentheses like this:

(12,5)

• axis (graph)

• coordinates

• coordinate plane

• ordered pair

The starting point.

On a number line it is 0

On a two-dimensional graph it is where the X axis and Y axis cross.

• origin

• quadrant

• y-axis

Any of the 4 areas made when we divide up a plane by an x and y axis, as shown.

They are usually numbered I, II, III and IV

• origin

• quadrant (graph)

• y-axis

The line on a graph that runs vertically (up-down) through zero.

It is used as a reference line so you can measure from it.

• origin

• quadrant (graph)

• y-axis

The horizontal value in a pair of coordinates: how far along the point is.

• x-coordinate

• y-coordinate

• x-axis

The vertical value in a pair of coordinates. How far up or down the point is.

• x-coordinate

• y-coordinate

• x-axis

The line on a graph that runs horizontally (left-right) through zero.

It is used as a reference line so you can measure from it.

• x-coordinate

• y-coordinate

• x-axis