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ali015
One way, and probably the fastest way to graph, [tex]y = - \frac{x}{2} + 1[/tex] would be to plug in x values and plot the y value you get with the corresponding x value.

You only need two points because it's a linear graph. You already know one point, the y intercept, because your equation is in point slope form and b = 1, so 1 is the y intercept. 
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