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7.1 SOLVING EQUATIONS IN TWO VARIABLES

❶Any third ordered pair that satisfies the equation can be used as a check:

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7.2 GRAPHS OF ORDERED PAIRS
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Identities are introduced in the first chapter, the most current version. Sample quizzes and exams; read testimonials or sign up homework help graphing linear equations a free instructor account today.

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Steps involved in graphing linear equations: Step 1: Find the x-intercept and y-intercept of the linear equation. Need more help understanding graphing linear equations? Send any homework question to our team of experts.

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To graph a linear equation, we can use the slope and y-intercept. Locate the y-intercept on the graph and plot the point. From this point, . The solution set to any equation is the place where BOTH equations meet on the xy-plane. This meeting place is called the Point of Intersection. If you have a linear equation and a quadratic equation on the same xy-plane, there may be TWO POINTS where the graph of each equation will meet or intersect.

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For example, an equation such 3x +5y = 16 is already in standard form, as a equals 3, b equals 5, and c equals Similarly, an equation such as y = 5x – 3 can be put in standard form as -5x +y = Graphing Linear Functions. If the equation for a function can be written in standard form, it can be graphed as a linear function. Suppose the . Systems of linear equations can be solved by other methods than graphing, such as substitution and elimination. When solving by elimination, some systems can be solved by addition, subtraction, and multiplication.