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Linear Graphs And Their Applications

Definitions and notations

Math

Order Pair:

A pair of two real number written in fix order within parenthesis. It represent the position of the point in the cartesian plane.

For Example: (3,2)(3,2)

This is defining the point on 3rd3^{rd} row and 2nd2^{nd} column or the value of xx is 33 and the value of yy is 22

Cartesian/Rectangular Plane:

The cartesian coordinate system consist of two real number lines that intersect at a right angle at point O, where both the number plane have value 0. These two lines define a flat surface called Cartesian plane.

Origin:

The point of intersection of both the number lines in the cartesian coordinate system.

X-Axis:

X-axis is the horizontal number line of the cartesian plane.

Y-Axis:

Y-axis is the vertical number line of the cartesian plane.

Abscissa:

The value of x in the order pair is called abscissa.

Ordinate:

The value of y column in the order pair is called ordinate