题库搜索>问题求解PS-12372
In the xy-plane, what is the slope of the line with equation 3x + 7y = 9?
分析A选项
分析B选项
分析C选项
分析D选项
分析E选项
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当前版本由 借我借我一双慧眼吧 更新于2015-12-09 13:46:30 感谢由 借我借我一双慧眼吧 对此题目的解答所做出的贡献。将原等式简化成y=(-3/7)x+9/7，所以为B
Q求斜率，这题
结合y=kx+b的格式 k就是斜率
7y=9-3x
Y=(9-3x)/7
K=-3/7
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