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2-84.

The graph of the equation  is a line.  

  1. Find the - and -intercepts and graph the line using these two points.

    To find the y-intercept, substitute for and evaluate.

    Now do the same for the -intercept, but substitute for instead.

  2. If a point on this line has an -coordinate of , what is its -coordinate?

    Substitute for and evaluate for the value of .