Page 100 - Maths Skills - 8

Linear Equations in One Variableariable
7 7 Linear Equations in One V

Learning Outcomes

In this chapter, you will learn about:
� Equation � Equations reducible to linear form
� Rules for solving a linear equation � Applications of linear equations in one variable

Boot-Up (To Recapitulate Previous Knowledge of Concepts)

COMPETENCY BASED QUESTIONS

A. Multiple-Choice Questions
1. The sum of four times x and 12 is 33 is written in equation form as

(i) 4x + 12 + 33 (ii) 4x + 33 = 12 (iii) 4x +12 = 33 (iv) None of these
2. The solution of the equation x + 3 = 0 is

(i) x = 3 (ii) x = 1/3 (iii) x = – 3 (iv) None of these
3. Which is allowed in an equation?
(i) Adding the same number on both the sides

(ii) Subtracting the same number from both the sides
(iii) Multiplying with same number on both the sides
(iv) All of these

4. Which of the following equation has x = 10 as the solution?
(i) x + 10 = 100 (ii) x/10 = 1 (iii) 1/x = 10 (iv) x – 1 = 10

B. Fill in the Blanks
1. If 3p =18, then p is ________________.
2. The solution of the equation 8x + 8 = – 8 is ________________.
3. Solution of the equation 1/x = 0 does ________________.

4. A positive number on transposing from one side to other becomes a ________________ number.

C. Write ‘T’ for true and ‘F’ for false Statements
1. 10 x – 82 means x is subtracted from 82.

2. It is not necessary to have the sign of equality in an equation.

3. The equations 4x = 60 and 5x – 75 = 0 have the same solution.
4. In an equation LHS is always equal to RHS.