Class 8 Linear equation in one variable ||Q 20 To 25||RS Agrawal class 8 solution||NCERT solution

Every point on the graph of a linear equation in two variables does not represent a solution of the linear equation.

The homogeneous system AX=0of n linear equation in n variables has (A) a unique solutions if |A|!=0 (B) infinitely many solution if |A|=0 (C) no solution (D) none of these

Factories class 8

3x-2-7,3/2x+9=1/2, y/3+(y-2)/4=5 are linear equations in one variable, because the highest power of the variable in each equation in one whereas the equations 3x^2-2x+1=0, y^2-1=8 are not linear equations, because the highest power of the variable in each equation is not one. In this chapter, we shall study linear equations in one variable only.

Class 10 ncert maths solution exercise 8.1 Qn o. 1