The planes defined, respectively, by the equations x - y – z = 1 and 2x + y + z = 2 intersect in a line. Which of the following is a set of symmetric equations for that line? Hint: Please keep in mind that a given line has more than one set of symmetric equations that describe it. If you are unsure because the symmetric equations you found look differently from all answer options, try applying equivalence transformations to your equations so that the term involving the variable z becomes equal to z, then compare again. x = 1, y +1 = z x = 1, -y +1 = z x = 1, -y = % O None of these. x = 1, y = %

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