1.) what is the value of y?

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y =

2.) what is bc ?

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units

3.) solve for x.

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x =

4.) what are the coordinates of the circumcenter of a triangle with vertices a(−3, 3) , b(−1, 3) , and c(−1, −1) ?

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( ? , ? )

5.) what are the coordinates of the centroid of a triangle with vertices j(−4, 2) , k(2, 4) , and l(0, −2) ?

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( ? , ? )