Chap04
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This document provides examples of linear equations and asks the reader to identify whether equations are linear, determine if values are solutions, write equations from word problems, and solve various linear equations. Some key points: - It asks the reader to identify linear terms, expressions, and equations. - Examples are given of writing linear equations from diagrams and word problems. - The reader is asked to determine if given values are solutions to equations and to solve various linear equations using different methods like trial and improvement.
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Chap04
- 1. CH AP T ER 4 Linear Equations 1. Write = or in the given boxes. (a) 0.7 + 1.5 0.85 (b) 19 days 2 weeks 5 days 2. For each of the following equations, write T for a linear algebraic term. Otherwise write F. 1 (a) p (b) 7xyz 4 3. For each of the following equations, write T for a linear algebraic expressions. Otherwise write F. 1 (a) (b) 2a 4 + 7b r 4. For each of the following equations, write T for a linear equation. Otherwise write F. (a) x2 + 1 = 0 (b) 3(2x 5) = 3x 5. For each of the following equations, write T for a linear equation in one unknown. Otherwise write F. (a) 2x + 3y = 5 (b) 7 = 3p2 6. 2x 鐃 3 3x The diagram shows a triangle and the measurements of sides, in cm. Form a linear equation if the perimeter of the triangle is 12 cm. 5x 鐃 1 x+4 7. Write = 3 as a statement. 5 8. Determine if the value given in the bracket is a solution of the given linear equation. 3x (a) = 7.5 (x = 5) (b) 3(x + 8) = 12 + x (x = 5) 2 9. Use the trial and improvement method to solve 2x 4 = 6. 19 息 Penerbitan Pelangi Sdn. Bhd.
- 2. 1 0. Solve each of the following equations. (a) 2 + x = 7 (b) x 8 = 5 1 1. Solve each of the following equations. (a) 5x = 120 (b) x = 13 1 2. Solve each of the following equations. x (b) 1 = x 17 3 (a) 6x + 5 = 47 1 3. Azmi is heavier than Bahrum by 6 kg. Their total mass is 150 kg. What is Azmis mass? 息 Penerbitan Pelangi Sdn. Bhd. 20