Example28 - Example9 Solvethesystembygraphing.

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Example 9 Solve the system by graphing. Find three values for  x  and  y  that satisfy each equation.  x  + 4  y  = 2    6  x  + 8  y  = 4  Following are the tables of  x  and  y  values. See Figure 2.  x y 0 2 – 1 4 x y 0 2 – 1 4
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Notice that the same points satisfy each equation. These equations represent the same line. Therefore, the solution is not a unique point. The solution is all the points on the line.
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Example28 - Example9 Solvethesystembygraphing.

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