Question

Solve the problem of an equation graphically x+y=5 ,x-y=8

Answer 1

Add both the equations
you get

x + y + x - y = 8+5
2x = 13
so, x= 13/2

putting value of x in
x+y = 5
y= 5- 13/
y= -3/2

Answer 2

The solution of the equation is (6,5,-1.5).

Step-by-step explanation:

Given : Equations $x+y=5,\ x-y=8$.

To find : Solve the problem of an equation graphically ?

Solution :

We plot the equations in graphing tool.

Equation x+y=5 is represented by red straight line passing through (0,5) and (5,0).

Equation x-y=8 is represented by blue straight line passing through (8,0) and (0,-8).

The solution of the equation is the intersecting point of both equations.

The intersecting point is (6,5,-1.5).

Therefore, the solution of the equation is (6,5,-1.5).

Refer the attached figure below.

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