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   Solve the following systems algebraically. What does each solution reveal about the graph of the equations in the system?

  1. Multiply the second equation by and use the Elimination Method.

    Substitute for in one equation to determine the value of .

  1. See part (a).

  1. Substitute the expression for from the second equation into the first equation and solve.

  1. Rewrite both equations in standard form.

    See part (a).