Easy
Rectangle ABCDA B C DABCD has two vertices at coordinates A(−1,−3)A(-1,-3)A(−1,−3) and B(6,5)B(6,5)B(6,5). Find the slope of BC‾\overline{B C}BC.v
−78-\frac{7}{8}−87
−87-\frac{8}{7}−78
78\frac{7}{8}87
87\frac{8}{7}78
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