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7. ( )若善美由直角坐標平面上P點(-5,2)出發,先向右移動9個單位,再向下移動5個單位,到達新的位置Q點,若敬思從B點(-m+3,5-2n)出發,向左移動6個單位,向上移動8個單位之後與Q點重
問題詳情
7. ( )若善美由直角坐標平面上P點(-5,2)出發,先向右移動9個單位,再向下移動5個單位,到達新的位置Q點,若敬思從B點(-m+3,5-2n)出發,向左移動6個單位,向上移動8個單位之後與Q點重合,則下列哪一個選項是正確的?
(A)敬思原來出發的位置在第一象限
(B)m=-7
(C)n=0
(D)B點坐標為(-4,-11)
參考答案
答案:B
難度:困難0.333333
統計:A(1),B(1),C(0),D(1),E(0)
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