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Mathematics Junior High

解き方✓1の②でなぜ平行四辺形だと(6.d+3)になるんですか??

[2 の国のように, 関数9ニx…ののグラフトに3点 AB、 Cを、り軸上上に点Dを, 四角形ABCD が平行四辺 形となるようにとり,四角形ABCDの辺ABとり軸との 交点をEとする。点Aの座標が (一4、一,点Bの座 標を 2. /) とする。 x軸上に点Fをとり,。ACDEの面 積とへAEDの面積が等しくなるとき, 点Fの護標を求め なさい。ただし, 点Fは, 直線CDについて, 原点と同 じ側にとるものとする。 CE略の・{ 問題の条件を図に書き込む A(一4. 4) がり=cx2zのグラフト上にあることより, @の式はり=9[ ] B(2.の はリーニーのグラフ上にあるので. pニーーナメ のTB(2 ニャ 点Dのy座標を4とすると,D (0, の 四角形ABCD は平行四辺形なので, C (⑥[ ] g+3) (6。g*衣 はりーニーナのグラフ上にあるので d+ 3ニーナメ の g=ー12 BS5X間BK(3 (12 直線ABはA(-4。-め。B(2, 一1) を通るので. リーティー2 よって. E (0⑩. @( ) で:革の・2 求める座標を文字でおく 点Fの座標を文字でおき, 等式をつくって点Fの座標を求める。 で切の・ み要な長さや, 護標, 直線などを求める へAED = X 10 x4=20 点Fのx座標を/とすると, F (0) 直線DFは傾きが⑨[ ] なので, リーチャー12 点Cからy軸にひいた垂線と直線DFとの交点をGとすると. 6 ⑲[ 上 の) つの ce=e-チ 1 誠 AcDF =AcDe+^CF6=す(6一)メ3+テ(6一)*9=6(6 へCDF =AAEDより <(<-7) 20 これを解いて. /=@( me | ーー ]

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English Junior High

教えてください

9 カズヒコ(Kazuhi ( em 学校で店をしています。 この対語文を読んで。 ビ に入る最も適当な英文を 選び. その符号を書きなさい。 ・それぞれあとのアーエのうちから一つずつ Kazuhiko: TI' i PS gotng to visit an elementary schoo1 and teach English as a Yolunteer next month. [ (⑪ What wル Helen: Pm i H Sure。 Tm interested in teaching English to children in Japan: you do with the childrens Kazuhiko: Tm thinking about talking about future jobs. The children ask ea questionS and answer them. We will help them when they talk. Helen: Thaf's interesting.、 The children wi try to use expreSSiOnS like ” or T want to be a doctor” They are useful expressionS to ch other learn English. Kazuhiko: Talso think that thinking about their future job S good for them. SE Youre right. ICs important for everyone to think about their own future jobs. Kazuhiko: Well I think we have to talk about our own fature jobs in PBngtish before teaching children. What is your future job? TI want to be a preschool teacher. When 1 went to preschool。 nny teacher Helen: 1 also was very kind to me. 1 have wanted to be like her since then. enjoyed taking care of my younger brothers when they Were iittle, so 【 want to work at a preschool. Kazuhiko: IT want to be a translator. Helen: 1 think you will be a great translator in the future. Kazuhiko: Thank you, Helen. 注) elementary school 小学校 expression 表現 preschool 保育園 6 translator 翻訳家 イ What will you do 、(①⑰ ア Do you have any plans that day? エ Will you come with me ウ Do you do any volunteer Work? 較e叶"ol 1 (sit SA D59033 イ What is your future job? Where are you from? | hat kind of book do you often read? エエ How did you come herer イ Idont think so. エ 1 donmt understand. イ How about you? エ Have you heard of that?

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