组卷网>知识点选题>待定系数法求直线方程
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单选题 | 较易(0.85) | 2021·全国高二课时练习
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1 . 已知直线eqId4ee1c84b76dd4e3bb847ff7937df84c2被圆eqId2efda802d5534f6d92d9f8af7aaec28beqId1d8bc76d53144aa0b9d9f747186b2976所截得的弦长为eqId2644c4fd7d684e75ae5ed93cb3581244,则eqIdd33c7c1015944e2b81de4ff8695de842(   )
A.eqIdbeffaaf8d5cd43cf8375210d69fce6beB.eqId37705e1ef6a84bbdbe88433e75932cdfC.eqIdc052ddfbd4524f67a79e0e77c2e5656aD.eqId03859367a9b64a56ab90e31a0cec909a
更新:2021/07/31组卷:0
多选题 | 一般(0.65) | 2021·全国高二课时练习
同步
2 . 已知直线eqId417e80f1349244878d01fe90e0891f5f经过点eqId846da63e82904d27a1d3d09ffad110b0,且被两条平行直线eqId74c7e0292b094e54ae596d37798a05edeqIdc2fe8568c08140f7a71f0f381f2ae086eqId439fb93f7745417b8bb1747d963c6e60eqIdcfbe9ffc51c74298af853bc9ba5fa7b0截得的线段长为eqId8f65c930571d4ff6aa6a50029d46826e,则直线eqId417e80f1349244878d01fe90e0891f5f的方程为(   )
A.eqIdc5faa3a08c944a41850c52572707bcadB.eqIdbf6df677a4ad4645b9eb2dfab9d3230f
C.eqId8ee60f7c914f4f2b83bb912559c0c2aeD.eqIdaaf3b5740ff64de89bfc204544dd71a5
更新:2021/07/31组卷:0
单选题 | 较易(0.85) |
3 . 已知过点eqIdaf5300d410f743f19da5023d0bd89fca且与两坐标轴都有交点的直线eqId74c7e0292b094e54ae596d37798a05ed与圆eqId16f49d74344544f89e5574760f7d414a相切,则直线eqId74c7e0292b094e54ae596d37798a05ed的方程为(   )
A.eqId8d7140264c614e26a09bfae127cce260B.eqId28250334355d4dfcb4f152e07aaceb0a
C.eqId8d7140264c614e26a09bfae127cce260eqIdc5faa3a08c944a41850c52572707bcadD.eqId28250334355d4dfcb4f152e07aaceb0aeqIdc5faa3a08c944a41850c52572707bcad
更新:2021/07/29组卷:106
解答题 | 较易(0.85) | 2021·贵州高二学业考试
4 . 直线eqId417e80f1349244878d01fe90e0891f5f过点eqId016f26e72c0648eda961cd4bfdb69bcc且与直线eqIdf2475126a9de4c11aa747294bb3a5599垂直.
(1)求直线eqId417e80f1349244878d01fe90e0891f5f的方程;
(2)求圆心在直线eqId417e80f1349244878d01fe90e0891f5f上且过点eqId769253c23014435e8a96b6bd66657930eqIdc8bccf4a759e468b91cd934877956fcd的圆的方程.
5 . 已知直线l过点eqIdf1fa05b4340c4d65b32aeeb370aff525,且与x轴、y轴的正半轴分别交于AB两点,则eqIdb457f7d31e13466aa25edb4234fce91e的面积取得最小值时直线l的方程为(   )
A.eqId6e0ac915bbbe4abfba648cc5d1157608B.eqId886805e1d9454ee6abfc5f9f32a4012a
C.eqIde83f6a023ed4415bb9f3adb69719ddc9D.eqId0f30a90506b94ef2b0049c89bae71b57
6 . 已知直线eqId417e80f1349244878d01fe90e0891f5f经过点eqId82f34cc0dbe94a8e9d5201eecbc30f71
(1)若eqIdbe973624835548d9b3b266400250beba 在直线eqId417e80f1349244878d01fe90e0891f5f上,求eqId417e80f1349244878d01fe90e0891f5f的方程;
(2)若直线eqId417e80f1349244878d01fe90e0891f5f与直线eqId2e6f0f6a7011484bb77d72397a9bef99垂直,求eqId417e80f1349244878d01fe90e0891f5f的方程.
7 . 过eqId8f642749f9a34ec4b761333380f44045的直线eqId417e80f1349244878d01fe90e0891f5f与圆eqId16f49d74344544f89e5574760f7d414a相切,则直线eqId417e80f1349244878d01fe90e0891f5f的方程为(   )
A.eqIde8e55fb6027042f298621830ce0ecfb7eqIdce86a3ff06014e889756c903af5d21c4B.eqIda732fb72c56a4239820703168dedba31eqIdce86a3ff06014e889756c903af5d21c4
C.eqIde8e55fb6027042f298621830ce0ecfb7eqIdc5faa3a08c944a41850c52572707bcadD.eqIda732fb72c56a4239820703168dedba31eqIdc5faa3a08c944a41850c52572707bcad
8 . 已知直线eqId417e80f1349244878d01fe90e0891f5f经过点eqId4c3d8b18588843f59006c7b748c6442f
(1)若原点到直线eqId417e80f1349244878d01fe90e0891f5f的距离为2,求直线eqId417e80f1349244878d01fe90e0891f5f的方程;
(2)若直线eqId417e80f1349244878d01fe90e0891f5f被两条相交直线eqId0d15c59fd5104575a3a6781456c4dc1ceqIde0134976f9634f1cb9fd2c167faa7c1f所截得的线段恰被点eqIdbedf755e0fdb4d078d6859360706b163平分,求直线eqId417e80f1349244878d01fe90e0891f5f的方程.
9 . 已知直线eqId7420e9a5e5994541a7462e4a4193ed58与直线eqIddda9404fa3c542d8b959df31656d40a3
(1)若eqIdf02f6dfb6bda4f6fbc66f1f1fb5cef06,求m的值;
(2)若点eqId172645683c5f453497661763b91c1bbd在直线eqId439fb93f7745417b8bb1747d963c6e60上,直线eqId417e80f1349244878d01fe90e0891f5f过点P,且在两坐标轴上的截距之和为0,求直线eqId417e80f1349244878d01fe90e0891f5f的方程.
更新:2021/06/14组卷:852
解答题 | 一般(0.65) |
10 . 已知eqId64b9b599fdb6481e9f8d9a94c102300b的顶点A(5,1),AB边上的中线CM所在的直线方程为2xy-5=0,AC边上的高BH所在的直线方程为x-2y-5=0.
求(1)AC所在的直线的方程;
(2)点B的坐标.
更新:2021/06/14组卷:449
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