Question

In PAIR OF LINEAR EQUATIONS OF TWO VARIABLES of Class 10th. We also need to represent it GRAPHICALLY. Can someone help me out OR can someone tell me, HOW TO LET THE CORRECT VALUE OF VARIABLE x AND y TO REPRESENT MY GRAPH CORRECTLY?

Answer 1

The best points that can help you find the solution quick for a given equation are,

1) Take x = 0, You will get value of y.

2) Take y = 0, You will get value of x.

Do this for both lines.

Now, You get a rough idea of how the lines are, and a probable idea as where they will intersect.

The next point you should take is,

1, - 1 as x and find values of y.

Repeat the same by taking 1, - 1 as the y and find value of x.

Now, Join all these points and extend them using a scale retaining their slope. You will get a point where they will intersect. That's the solution of the given pair of equations.