1、 2018 . y x A y=2x+1 B C D 2y=x 2 y=k k A 1 B 2 C D 3 y= m 1 x |m| 2 m A m=2 B m= 1 C m=1 D m=0 4 y x x z y z A B C D 5 m x 0 y x m A m 0 B C D 6 k1 0 k2 y= y=k2x 1 A B C D 7 y=kx+k y= A B C D 8 A B y=2x+1 C y= x D y= x 2 +1 9 ab 0 y=ax+b A B C D 10 =x+1 x0 1 x0 2 k A 1 B 2 C 3 D 6 11 y= y= 11 12 A
2、B C D 12 P 3a a y= k 0 A y= B y= C y= D y= 13 y= A 1 1 B C x D x 0 y x 14 y= k y=kx k A B C D 15 y= 0 y x A 1 a B 2 b a b P x y P1 x y A 4 B 3 C 2 D 1 16 x y A y= B y= C y= D y= 17 y= y x m A m 0 B m 0 C m 1 D m 1 18 ABCD O y= D ABCD 18 19 A 10 B 11 C 12 D 13 19 A B y= A OB D C 1 D OB k A B C 3 D 4 4 20 y= a 1 a= 21 y= k= 22 y= 2 x 23 y x k 24 y= 1 x= 10 y 2 y=6 x 25 2013 y= 5m 3 x 2 n + n+m 1 m n 2 m n 3 m n 26 y= 1 m 2 A x1 y1 B x2 y2 y1 y 2 x1 x2 22 1 C 2 D 3 B 4 A 5 C 6 C 7 B 8 A 9 C 10 C11 B 12 D 13 D 14 B 15 B 16 A 17 D 18 C 19 B20 B 21 C 22 C 4 23 -1 24 1 25 -2 x 0 26 -1 4 27 28 29 30
