Q21 of 102 Page 49

Find the solution of the following simultaneous equations of graphical method:

x + y = 3; 2x + 5y = 12


x + y = 3


⇒ y = 3 – x


Now we need to plot this equation on graph, for that we will take some points of x and put in the equation to obtain points of y.



2x + 5y = 12


⇒ 5y = 12 - 2x



Now we need to plot this equation on graph, for that we will take some points of x and put in the equation to obtain points of y.



q3.JPG


The point of intersection is (1,2)


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