Question

find the solution for the pair of linear equation by graphical method : x+y=5 2x+y=7 do in graphical method ​

Answer 1

Answer:

x=2

y=3

Step-by-step explanation:

x+y=5

2x+y=7

y=-x+5

2x-x+5=7

x=7-5

x=2

y=5-x

y=5-2

y=3

Answer 2

$\sf\huge\bold{\underline{\underline{{Solution}}}}$

We have given two pair of linear equations and we have to find the value of x and y through graph.

For that firstly convert the Equation either in the form of x or y and then plot points into and obtained the coordinate . Put the coordinate into graph of both the Equation and we obtained a interesting point with the help of coordinate of both the Equation which will be our final solution.

➙x+y=5------(1)

➙2x+y=7-----(2)

Solving first Equation

x+y=5

➙x= 5-y

At y=0

➙x= 5

At y= 1

➙x= 5-1=4

Now ,plot the points (5,0)& (4,1) into graph

-----------------------------------------------------------

Solving second part

2x+y=7

➙y= 7-2x

At x=0

➙y= 7

At x=1

➙y= 5

Now,plot the points (0,7)& (1,5) into the graph

After plotting points we obtained a straight line graph which intersect at the points (2,3)

Hence,the solution of the given pair of linear equations is x = 2 & y=3.