Viva Voce: Linear Equations - Class 10 PDF Download

Q.1. What is the equation of a line parallel to x-axis?

y = a, where a is any constant.

Q.2. If x = 0 and y = 0, where would the point lie on graph?

At origin (0, 0)

Q.3. Is the pair of linear equations 2x + 3y – 9 = 0 and 4x + 6y -18 = 0, consistent?

Here
⇒ Given system of equations is consistent and has infinitely many solutions.

Q.4. What does the graph of a linear equation represent?

A straight line

Q.5. If the graphical solutions of two linear equations of two lines intersect in a plane, then what type of the solution do they have?

Unique solution

Q.6. What is the equation of a line parallel to y-axis?

x = b, where b is any constant.

Q.7. What is the condition for inconsistent and consistent solution for the system of linear equations?

Linear equations are

a₁x+b₁y+c₁=0
a₂x+b₂y+c₂=0
Inconsistent solution,
Consistent solution,
(i) 
(ii) 

Q.8. For what value of p does the pair of linear equations given below has unique solution?
4x + 8 = 0, 2x + 2y + 2 = 0

For unique solution,