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# GRAPHS

CONTENT

1. Definition of Graph
2. The Cartesian Plane (constructing Cartesian plane; coordinate/ordered pair; choosing scales; plotting points on a Cartesian plane)
3. Graphs of Linear Equations
4. Plotting Graphs from Table of Values

## Definition of Graph

Graph is a picture of numerical data. A familiar example is the representation of numbers on the number line. The positions of the number on the line are called points.

## The Cartesian Plane

This is a plane surface with axes drawn on it. The Cartesian is derived from a French philosopher and mathematician who worked out the possibility of presenting geometry in a numerical form. His full name is Rene Descartes, hence the name Cartesian.

We describe a point on a Cartesian plane by two numbers say (x, y) called coordinates. x is the distance of the point from vertical line called y-axis and y is the distance of the point from horizontal line called x-axis. The figure below illustrates it more.

Lesson tags: JSS2 Mathematics, JSS2 Mathematics Evaluation Questions, JSS2 Mathematics Evaluation Questions Second Term, JSS2 Mathematics Objective Questions, JSS2 Mathematics Objective Questions Second Term, JSS2 Mathematics Second Term, Mathematics Lesson Notes, Mathematics Objective Questions
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