問題詳情
13. 在坐標平面上，設 k 為實數，若 ( 2,3)、( 4,–5)、( k ,–3) 三點共線，則 k =？ 
參考答案
答案：B
難度：簡單0.703125
統計：A(6),B(45),C(8),D(5),E(0)
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