Notice that these solutions

Notice that these solutions -...

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Notice that these solutions, when plotted, form a straight line. Equations whose solution sets form a  straight line are called  linear equations.  Complete the graph of  x  +  y  = 6 by drawing the line that  passes through these points (see Figure 5).  Figure 5. The line that passes through the points graphed in Figure 4.  Equations that have a variable raised to a power, show division by a variable, involve variables with  square roots, or have variables multiplied together will not form a straight line when their solutions 
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Notice that these solutions -...

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