國中 解答

下列二次函數圖形中,何者與 x 軸的交點最多?

如圖(一)所示,小英丟球的軌跡是一個二次函數 y   x 2  2 x  k 的 3 部份圖形,已知小英是在此二次函數的頂點 A( a , b) 將球丟出,且從 點 B (0 , 1) 進入袋中,則 a  b 之值為何?

坐標平面上有兩點 A(2 , 6) 、 B (3 , 4) ,則下列哪一條直線與 AB 沒有交點? 7

坐標平面上,已知 P 點在第四象限, P 點到 x 軸之距離為 5,且 P 點到 y 軸距離為到 x 軸距離的 2 倍,若 P 點之坐標為 ( a , b) ,則 a  b 之值為何?

坐標平面上,若 A(3 , 2) 、 B (k , 2k  1) 、 C (5 , 8) 三點在同一條直線上,則 k 之值為何?

若二次函數 f ( x )  2 x 2  ax  b 的圖形,頂點坐標為 ( 2 , 3) ,則 a  b 之值為何?

已知二次函數 f ( x)  3 x 2  6 x  2 ,當 x  a 時, f ( x ) 有最大值 b ,則 a  b 之值為何?

坐標平面上有四個二次函數的圖形,其方程式如下,則哪一個二次函數的圖形開口最大? 甲: y  3( x  1) 2  5 乙: y  2 x 2  10 x  1 1 丙: y   x 2  3 2 丁: y  ( x  1)( x  3)

小毅的家族有一塊三角形觀光果園用地,小毅為了計算果園的面積,特別利用空拍機攝影,將 其位置繪於坐標平面上,若此果園的三頂點分別為 A(3 , 1)、 B ( 5 , 7)、C ( 1 ,  1),且經過計算, 直線 AB 的方程式為 3 x  4 y  13  0 ,則三角形果園在坐標平面上的面積之值為何?

坐標平面上,一直線 L1 ,其方程式為 3 x  2 y  5  0 。若直線 L2 與直線 L1 互相垂直,則下列何 者可能是直線 L2 之方程式?

滿足絕對值不等式| 2 x  3 |  4 的整數解共有多少個?

Why did Maya Lin make the design open-source?

What information is correct based on the poster?

What is the main purpose of Maya’s invention?

How can we help stop child labor according to the passage?

Based on the passage, which of the following is one of the dangers child labor poses?

U.S. pet owners try hard to show love to their pets, except for .

Based on the passage, which of the following is NOT the benefit that pets bring to humans?

What is one feature of the event mentioned in the poster?

Which of the following about the festival is NOT correct?

What time might John Doe possibly get on board?

What information is NOT shown on the boarding pass?

Nelson: I haven’t seen your mom recently. How has she been? Amy: She is taking care of my grandma in the hospital now. Nelson: Oh, . Let me know if you need a hand. Amy: Sure, thanks.

Jack: Hey, why didn’t you come to the reunion yesterday? Lucy: Jack: I kept trying to call you, but you didn’t answer. Lucy: I left my phone at home. I hope you can understand.