Cách để Tìm giao điểm bằng phương pháp đại số

 Viết phương trình của mỗi đường thẳng với y nằm ở vế bên trái. Nếu cần, chuyển vế phương trình sao cho chỉ có y ở một bên dấu bằng. Nếu phương trình sử dụng f(x) hoặc g(x) thay cho y thì hãy tách số hạng này. Nhớ rằng bạn có thể triệt tiêu các số hạng bằng cách thực hiện phép toán giống nhau cho cả hai vế.

• Nếu đề bài không cho biết phương trình thì bạn tìm chúng từ các thông tin đã có.
• Ví dụ: Hai đường thẳng có phương trình là ${\displaystyle y=x+3}$ và ${\displaystyle y-12=-2x}$. Trong phương trình thứ hai, để vế bên trái chỉ có y thì bạn cộng 12 cho cả hai vế: ${\displaystyle y=12-2x}$

Đặt vế phải của hai phương trình bằng nhau. Chúng ta đang tìm điểm mà hai đường thẳng có cùng tọa độ x, y; đây là vị trí hai đường giao nhau. Cả hai phương trình đều chỉ có y ở vế bên trái, nên vế phải của chúng sẽ bằng nhau. Viết phương trình mới để thể hiện điều này.

• Ví dụ: Chúng ta biết ${\displaystyle y=x+3}$ và ${\displaystyle y=12-2x}$, do đó ${\displaystyle x+3=12-2x}$.

XEM THÊM: 

https://zenwriting.net/khutrungxanh/dich-vu-diet-con-trung-hieu-qua-uy-tin

https://zenwriting.net/khutrungxanh/dich-vu-diet-moi-tan-goc-tai-tphcm

https://zenwriting.net/khutrungxanh/dich-vu-diet-chuot-kiem-soat-chuot-hieu-qua

https://blogfreely.net/khutrungxanh/dich-vu-phun-thuoc-diet-muoi-hieu-qua-nhat-tai-tphcm

https://blogfreely.net/khutrungxanh/dich-vu-diet-kien-tai-nha

https://blogfreely.net/khutrungxanh/dich-vu-diet-gian-duc

https://ourstage.com/khutrungxanh

https://mraovat.vn/threads/cong-ty-diet-mot-go-tai-nha.71586/

https://mraovat.vn/threads/dich-vu-phun-thuoc-ruoi-tan-goc.71587/

https://mraovat.vn/threads/cong-ty-bat-ong-chuyen-nghiep.71588/

https://linkhay.com/link/4236913/thong-tin-ve-cong-ty-diet-con-trung-gfc

https://linkhay.com/link/4236915/diet-moi-tan-goc-tai-nha-418

https://linkhay.com/link/4236917/dich-vu-diet-moi-quan-1

https://raovat49.com/s/dich-vu-diet-moi-tan-goc-tai-quan-2-3173414

https://raovat49.com/s/dich-vu-diet-moi-tan-goc-tai-quan-3-3173417

https://raovat49.com/s/dich-vu-diet-moi-tan-goc-tai-quan-4-3173419

https://raovat.vn/members/khutrungxanh.61795/#about

https://raovatonline.org/author/google-webjp/

https://raovatonline.org/rao-vat/dich-vu-diet-moi-tan-goc-tai-quan-5/

https://raovatonline.org/rao-vat/dich-vu-diet-moi-tan-goc-tai-quan-6/

https://raovatonline.org/rao-vat/dich-vu-diet-moi-tan-goc-tai-quan-7/

https://kenhsinhvien.vn/topic/huong-dan-tim-kiem-don-vi-diet-moi-quan-8.800302/

https://kenhsinhvien.vn/topic/nhung-loai-moi-thuong-gap-nhat-hien-nay.800303/

https://kenhsinhvien.vn/topic/dich-vu-diet-moi-tan-goc-tai-quan-10.800305/

http://diendankientrucsu.vn/members/pest247gfc.12708/

http://diendankientrucsu.vn/threads/dich-vu-diet-moi-tan-goc-tai-quan-11.95914/

http://diendankientrucsu.vn/threads/dich-vu-diet-moi-tan-goc-tai-quan-12.95915/

http://diendankientrucsu.vn/threads/cach-phong-tranh-moi-hieu-qua-tai-nha.95916/

https://www.sitesinformation.com/site/khutrungxanh.com/

https://www.hansabase.com/threads/diet-moi-tan-goc-tai-binh-chanh.601700/

https://www.hansabase.com/threads/dich-vu-diet-moi-tai-can-gio.601701/

https://www.hansabase.com/threads/dich-vu-diet-moi-tai-huyen-cu-chi.601703/

http://diendan.namchamhoangnam.com/threads/d%E1%BB%8Bch-v%E1%BB%A5-di%E1%BB%87t-m%E1%BB%91i-t%E1%BA%ADn-g%E1%BB%91c-t%E1%BA%A1i-c%E1%BB%A7-chi.95968/

http://diendan.namchamhoangnam.com/members/pest247gfc.7279/

http://diendan.namchamhoangnam.com/threads/c%C3%B4ng-ty-di%E1%BB%87t-m%E1%BB%91i-t%E1%BA%A1i-ph%C3%BA-nhu%E1%BA%ADn.95971/

http://diendan.namchamhoangnam.com/threads/c%C3%B4ng-ty-di%E1%BB%87t-m%E1%BB%91i-t%E1%BA%A1i-t%C3%A2n-b%C3%ACnh-tphcm.95973/

https://maxilingvo.kz/go?url=http://khutrungxanh.com/

https://lanphong.net/members/pest247gfc.75251/#about

https://www.mnetgroup.org/members/pest247gfc.6036/

https://www.mnetgroup.org/threads/dich-vu-diet-moi-tan-goc-tai-tan-binh.91573/

https://www.mnetgroup.org/threads/diet-moi-tan-goc-tai-thu-duc.91574/

https://www.mnetgroup.org/threads/dich-vu-diet-con-trung-tai-binh-thanh.91578/

https://hangcu.vn/index.php?members/82350/#about

https://hangcu.vn/index.php?docu/102463/

https://hangcu.vn/index.php?docu/102464/

https://hangcu.vn/index.php?docu/102465/

https://btcvn.org/members/pest247gfc.14101/

http://fr.mamnonsonca.edu.vn/members/pest247gfc.4131/

http://giahoclaixe.net/members/pest247gfc.6512/

http://giahoclaixe.net/threads/diet-con-trung-tai-tay-ninh.56952/

http://giahoclaixe.net/threads/cong-ty-diet-con-trung-tai-ba-ria-vung-tau.56953/

http://giahoclaixe.net/threads/dich-vu-diet-con-trung-tai-an-giang.56954/

https://tinhte.vn/members/pest247gfc.2784690/

https://tinhte.vn/thread/cong-ty-diet-con-trung-tai-an-giang.3249807/

https://tinhte.vn/thread/con-gian-so-gi-nhat.3249809/

https://tinhte.vn/thread/nhung-loai-thuoc-diet-con-trung-hieu-qua-nhat.3249812/

http://forum.duoclieutanphat.com/members/pest247gfc.3403/

http://diendan.lyhocdongphuong.org.vn/profile/52605-pest247gfc/?tab=field_core_pfield_15

http://diendan.lyhocdongphuong.org.vn/chu-de/41916-c%C3%B4ng-ty-di%E1%BB%87t-c%C3%B4n-tr%C3%B9ng-t%E1%BA%A1i-ti%E1%BB%81n-giang/

http://diendan.lyhocdongphuong.org.vn/chu-de/41918-di%E1%BB%87t-c%C3%B4n-tr%C3%B9ng-t%E1%BA%A1i-h%E1%BA%ADu-giang/

http://diendan.lyhocdongphuong.org.vn/chu-de/41920-di%E1%BB%87t-c%C3%B4n-tr%C3%B9ng-t%E1%BA%A1i-ki%C3%AAn-giang/

https://vatgia.com/raovat/4177/16202082/diet-con-trung-tai-ben-tre.html

https://vatgia.com/raovat/4177/16202092/diet-con-trung-tai-vinh-long.html

https://vatgia.com/raovat/4177/16202099/diet-con-trung-tai-can-tho.html

https://ngocdenroi.com/goc-nhin/cach-viet-blog.html/comment-page-1#comment-150458

https://canhme.com/tin-tuc/lets-encrypt-cung-cap-1-ty-chung-chi-ssl-free/

http://chothai24h.com/threads/81674-Cong-ty-diet-con-trung-Tra-Vinh.html?p=88833#post88833

http://bftvietnam.com/forum/showthread.php/72768-Cong-ty-diet-con-trung-Bac-Lieu.html?p=80681#post80681

http://chothai24h.com/threads/81676-Diet-con-trung-tai-Ha-Giang.html?p=88835#post88835

http://bftvietnam.com/forum/showthread.php/72775-Cong-ty-diet-con-trung-Binh-Thuan.html?p=80688#post80688

http://maymienbac.com/diendan/showthread.php?59681-Kiem-soat-chuot-hieu-qua.html&p=65133#post65133

http://bftvietnam.com/forum/showthread.php/72779-Ban-hop-nhu-moi-tai-TPHCM.html?p=80692#post80692

http://chothai24h.com/threads/81679-Dich-vu-diet-con-trung-tai-Ca-Mau.html?p=88838#post88838

http://maymienbac.com/diendan/showthread.php?59683-Cach-diet-ruoi-don-gian-tai-nha.html&p=65135#post65135

http://maymienbac.com/diendan/showthread.php?59684-Cach-diet-kien-don-cuc-ky-don-gian.html&p=65136#post65136

https://chiasesuckhoe.com/chat/con-gian-so-mui-gi-nhat

https://chiasesuckhoe.com/chat/cach-diet-muoi-tu-nhien-tai-nha

https://chiasesuckhoe.com/chat/san-pham-thuoc-diet-gian

https://chiasesuckhoe.com/chat/cach-diet-kien-lua-tan-goc-va-hieu-qua-nhat

https://thegioiraovat.info/threads/huong-dan-diet-mot-go-tai-nha.170681/

https://thegioiraovat.info/threads/cach-diet-muoi-tai-nha.170682/

https://thegioiraovat.info/threads/nhung-cach-diet-ruoi-vo-cung-hieu-qua.170684/

http://xaydunghanoimoi.net/threads/52712-Thuoc-diet-bo-chet-hieu-qua.html?p=59473#post59473

http://diendaseo.edu.vn/t/nhung-cach-diet-chuot-tai-nha.51798/

http://xaydunghanoimoi.net/threads/52717-Cach-diet-gian-hieu-qua.html?p=59478#post59478

http://diendaseo.edu.vn/t/cach-diet-kien-hoi-tai-nha-hieu-qua.51799/

http://xaydunghanoimoi.net/threads/52723-Nguyen-nhan-nha-nhieu-muoi.html?p=59484#post59484

http://diendaseo.edu.vn/t/thuoc-diet-moi-mot-go.51800/

http://congtruongit.com/forum/de-tai/c%C3%A1ch-di%E1%BB%87t-gi%C3%A1n-trong-nh%C3%A0-hi%E1%BB%87u-qu%E1%BA%A3.1356046/

http://congtruongit.com/forum/de-tai/ki%E1%BA%BFn-s%E1%BB%A3-m%C3%B9i-g%C3%AC-nh%E1%BA%A5t.1356048/

http://congtruongit.com/forum/de-tai/c%C3%A1ch-%C4%91u%E1%BB%95i-ki%E1%BA%BFn-gi%C3%B3-hi%E1%BB%87u-qu%E1%BA%A3-v%C3%A0-an-to%C3%A0n-nh%E1%BA%A5t.1356049/

https://www.fliponline.org/threads/nhung-mui-khien-chuot-tranh-xa.148697/

https://www.fliponline.org/threads/thuoc-diet-moi-sinh-hoc-hieu-qua-nhat.148698/

https://www.fliponline.org/threads/nhung-loai-thuoc-duoi-muoi-hieu-qua-nhat.148699/

https://forum.camera.edu.vn/p/cach-diet-mot-go-trong-nha.12177/

https://forum.camera.edu.vn/p/nhung-cach-diet-muoi-hieu-qua-ban-can-biet.12179/