Use a graphing calculator to check your answers for Problem 65.
65. A system such as
is not a system of linear equations nut can be transformed into a linear system by changing variables. For example, when we substitute
We can solve this “new” system either by elimination by addition or by substitution (we will leave the details for you) to produce
Solving these equations yields,
The solution set of the original system is
(a)

(b)

(c)

(d)

(e)

(f)

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