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Exercise # 6 Linear Equation Roll number: Definitions: Linear Equation: An equation in which only one variable is used and the highest power of variable is one is called linear equation. E.g 2x + 3 = 1 , 6x – 2 =7 Standard form is: ax + b = 0 Degree of Equation: Heist power of variable in given equation is called degree of equation. e.g. x7 + 2x2y + 3xy2 + 3 = 0 Degree # is (7) Variable : Values which do not remain constant are called variable. E.g. Temperature of a day. Constant: A value which remains unchanged is called constant. e.g. Numbers of days in a week. Equation : An algebraic expression is a symbolic statement in which two sides of expression are equal to each other. e.g. 2x + 3 = 4 Unknown: The letter whose value is desired is called value. 2x + 3 = 6 x unknown. Page 1 Root: The desired value of unknown is called root of equation. e.g 2x + 3 = 6 x = 3 / 2 is Root Expression: Expression is a collection consisting of symbols and numbers joined by arithatic operator. e.g 2x2 + 3x + 8 Term: A single part of expression is called term. E.g. 2x2, 3x, 8. Identical Equation: If two sides of equation are same then they are called identical equation. e.g 3x + 2x = 5x Conditional Equation: An equation that is true for certain value of variable is called conditional equation. e.g 2x + 3 = 5 , x=1 Transposition : The process of changing a quantity from one side to another by changing the signs plus or minus is called transposition. e.g 2x + 3 =1 2x = 1- 3 The End More Definitions Link: Download link : http://Preaty.webs.com http://preaty.webs.com/apps/documents/ Page 2