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Linear Equations An equation in which the highest index of the variables present is one, is called a "linear equation". An equation with one variable and of first order (i.e., its highest power is one) is called a Linear equation. It has only one solution and is also called the 'root' of the given equation.
Nonlinear Equations Equations that have indexes are higher than 1 are called nonlinear equations. Examples: 6^{3}  7x  3 = 0 x^{4}  5x^{2} = 5 Directions: Identify the type of equation given in each question. Also write at least 5 examples of linear and nonlinear equations. 