Introduction to Cartesian Coordinate System and Straight Line Graph

Rene Descartes & the fly

 

 

 Introduction to Cartesian Coordinate System

 
 

Song: Coordinates of a Point

Drawing a Straight Line Graph

• Axes and Scale
• follow scale and range required by the question
• Tables of Values
• first and last x values to follow the min. and max. values given in the range of the x-axis
• calculate y value by substituting x values in the equation. 
• Min. 3 points
• Plotting the graph
• Plot the points
• Draw a straight line to connect all points and label the graph by writing the equation beside the line drawn. 

 

Axes and Scale of Graphs 

•  Planning the position of the axes graph paper (from 1:00 to 1:51)

• Understanding the scale of each axis

 

 

 

 

 

 Table of values

 

 

 

 

  Note: we are using horizontal table instead of the vertical table shown in the video 

 

 

 Plotting the Graph

  

 Note: Mark the points with a "x"