Graphics Methods

Systems of equations or simultaneous equations can also be solved by the graphical method.

To do that, we draw the graph for each of the equation and look for a point of intersection between the two graphs. The coordinates of the point of intersection would be the solution to the system of equations.

If the two graphs do not intersect - which means that they are parallel - then there is no solution. 

Example : 
Using the graphical method, find the solution of the systems of equations 

y + x = 3 y = 4x - 2

Solution :

Draw the two lines graphically and determine the point of intersection from the graph.  

Features:
• Calculations are not accurate. • They have limited practical value.
• Allows initial estimate values.
• Allows understanding of the properties of
functions.
• They can help prevent failures in the methods.
• in general can be considered closed as ¨ closed¨