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Questions and Answers
Why is it important to consider the order of numbers in the pairs indicating solution?
What does finding a unique common solution for two linear equations indicate?
Why is it not always easy to solve two linear equations by taking different values of variables?
What method is used to solve simultaneous equations by eliminating one of the variables?
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What role does the order play in representing solutions in pairs?
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In the context of solving simultaneous equations, what does 'Simultaneous equations' refer to?
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What is the degree of the variable in the linear equations provided?
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Which of the following is an example of a linear equation in two variables?
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What does the equation $x + y = 14$ represent in the context of finding two numbers?
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Which pair of numbers satisfies the equation $x - y = 2$ provided in the text?
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What does the ordered pair (9, 5) represent in the context given in the text?
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What is the main characteristic of linear equations in two variables?
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Study Notes
Linear Equations in Two Variables
- The order of numbers in an ordered pair indicating a solution is crucial, as (8, 10) and (10, 8) are different solutions.
- There are infinite solutions for an equation in two variables, such as x + y = 14, for example, (9, 5), (7, 7), (8, 6), etc.
Simultaneous Equations
- When two linear equations in two variables have a unique common solution, they are known as Simultaneous equations.
- The elimination method is used to solve simultaneous equations, where one variable is eliminated to obtain an equation in one variable.
Solving Simultaneous Equations
- The elimination method involves solving for one variable and then substituting its value into one of the given equations to find the value of the other variable.
Linear Equations
- Linear equations are equations in which the degree of the variable is 1.
- Examples of linear equations include m - 3n - 5, 3y + 8 = 22, 2p = p + 5, etc.
Writing Solutions
- Conventionally, a solution is written as an ordered pair, where the first value represents the value of x and the second value represents the value of y.
- For example, the solution x = 9, y = 5 is written as the ordered pair (9, 5).
Finding Solutions
- To find solutions, we can take different values of x and y, such as (9, 5), (7, 7), (8, 6), etc.
- These solutions can be found by trial and error or by using algebraic methods.
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Description
Test your understanding of solving linear equations with one variable. Practice finding unknown numbers in equations and learn how to form equations with two variables. This quiz covers basic concepts like finding the sum of two numbers and solving for unknown values.
