浜屾鍑芥暟鎬诲涔犵粡鍏哥粌涔犻
1
锛庢姏鐗╃嚎
y
=
锛?/p>
3
x
2
锛?/p>
2
x
锛?/p>
1
鐨勫浘璞′笌鍧愭爣杞寸殑浜ょ偣鎯呭喌鏄?/p>
( )
(A)
娌℃湁浜ょ偣锛?/p>
(B)
鍙湁涓�涓氦鐐癸紟
(C)
鏈変笖鍙湁涓や釜浜ょ偣锛?/p>
(D)
鏈変笖鍙湁涓変釜浜ょ偣锛?/p>
2
锛?/p>
宸茬煡鐩寸嚎
y
=
x
涓庝簩娆″嚱鏁?/p>
y
=
ax
2
锛?/p>
2
x
锛?/p>
1
鍥捐薄鐨勪竴涓氦鐐圭殑妯潗鏍囦负
1
锛?/p>
鍒?/p>
a
鐨勫�间负
( )
(A)2
锛?/p>
(B)1
锛?/p>
(C)3
锛?/p>
(D)4
锛?/p>
3
锛?/p>
浜屾鍑芥暟
y
=
x
2
锛?/p>
4
x
锛?/p>
3
鐨勫浘璞′氦
x
杞翠簬
A
銆?/p>
B
涓ょ偣锛?/p>
浜?/p>
y
杞翠簬鐐?/p>
C
锛?/p>
鍒欌柍
ABC
鐨勯潰绉负
( )
(A)6
锛?/p>
(B)4
锛?/p>
(C)3
锛?/p>
(D)1
锛?/p>
4
锛?/p>
鍑芥暟
y
=
ax
2
锛?/p>
bx
锛?/p>
c
涓紝
鑻?/p>
a
锛?/p>
0
锛?/p>
b
锛?/p>
0
锛?/p>
c
锛?/p>
0
锛?/p>
鍒欒繖涓嚱鏁板浘璞′笌
x
杞寸殑浜ょ偣鎯呭喌鏄?/p>
( )
(A)
娌℃湁浜ょ偣锛?/p>
(B)
鏈変袱涓氦鐐癸紝閮藉湪
x
杞寸殑姝ｅ崐杞达紟
(C)
鏈変袱涓氦鐐癸紝閮藉湪
x
杞寸殑璐熷崐杞达紟
(D)
涓�涓湪
x
杞寸殑姝ｅ崐杞达紝鍙︿竴涓湪
x
杞寸殑璐熷崐杞达紟
5
锛?/p>
宸茬煡
(2
锛?/p>
5)
銆?/p>
(4
锛?/p>
5)
鏄姏鐗╃嚎
y
=
ax
2
锛?/p>
bx
锛?/p>
c
涓婄殑涓ょ偣锛?/p>
鍒欒繖涓姏鐗╃嚎鐨勫绉拌酱鏂圭▼鏄?/p>
( )
(A)
x
=
a
b
飥?
锛?/p>
(B)
x
=2
锛?/p>
(C)
x
=4
锛?/p>
(D)
x
=3
锛?/p>
6
锛庡凡鐭ュ嚱鏁?/p>
y=ax
2
锛?/p>
bx
锛?/p>
c
鐨勫浘璞″鍥?/p>
1
鎵�绀猴紝閭ｄ箞鑳芥纭弽鏄犲嚱鏁?/p>
y=ax
锛?/p>
b
鍥捐薄鐨勫彧鍙兘
鏄?/p>
( )
(D)
(C)
(B)
(A)
x
y
o
y
x
o
y
x
x
y
o
7
锛庝簩娆″嚱鏁?/p>
y
=2
x
2
锛?/p>
4
x
锛?/p>
5
鐨勬渶灏忓�兼槸
______
锛?/p>
8
锛庢煇浜屾鍑芥暟鐨勫浘璞′笌
x
杞翠氦浜庣偣
(
锛?/p>
1
锛?/p>
0)
锛?/p>
(4
锛?/p>
0)
锛屼笖瀹冪殑褰㈢姸涓?/p>
y
=
锛?/p>
x
2
褰㈢姸鐩稿悓锛庡垯
杩欎釜浜屾鍑芥暟鐨勮В鏋愬紡涓?/p>
______
锛?/p>
9
锛庤嫢鍑芥暟
y
=
锛?/p>
x
2
锛?/p>
4
鐨勫嚱鏁板�?/p>
y
锛?/p>
0
锛屽垯鑷彉閲?/p>
x
鐨勫彇鍊艰寖鍥存槸
______
锛?/p>
10
锛庢煇鍝佺墝鐢甸キ閿呮垚鏈环涓?/p>
70
鍏冿紝閿�鍞晢瀵瑰叾閿�閲忎笌瀹氫环鐨勫叧绯昏繘琛屼簡璋冩煡锛岀粨鏋滃涓嬶細
瀹氫环锛堝厓锛?/p>
100
110
120
130
140
150
鍥?/p>
1
x
y
o
-4
-3
-2
-1
1
3