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ЗаречнаяСредняяШкола
@ЗаречнаяСредняяШкола
July 2022
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помогите решить n. 1213
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andreevnaelina
У=кх+6/7
1) Е(-1;1), где х= -1, у= 1. т.е. E(x;y)
1=к(-1)+6/7
1=-к+6/7
к=6/7-1
к=-1/7
2)F(7;-2). F(x;y), где х=7, у= -2
-2=к*7+6/7
-2=7к+6/7
-7к=6/7+2
-7к=6+14/7
-7к=20/7
к= -20/7 ×1/7
к= -20/49
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Answers & Comments
1) Е(-1;1), где х= -1, у= 1. т.е. E(x;y)
1=к(-1)+6/7
1=-к+6/7
к=6/7-1
к=-1/7
2)F(7;-2). F(x;y), где х=7, у= -2
-2=к*7+6/7
-2=7к+6/7
-7к=6/7+2
-7к=6+14/7
-7к=20/7
к= -20/7 ×1/7
к= -20/49