Sol (i) 2x 9 = 0 An equation in one variable We have 2x 9 = 0 ⇒ 2x = –9 Which is a linear equation in one variable 'x' only Its solution is the point on the number line as shown below (ii) 2x 9 = 0 An equation in two variables We can write 2x 9 = 0 as 2x 0y 9 = 0 or 2x = –9 0y
(x y)^2 formula class 9-Selina solutions for Concise Mathematics Class 9 ICSE chapter 6 (Simultaneous (Linear) Equations (Including Problems)) include all questions with solution and detail explanation This will clear students doubts about any question and improve application skills while preparing for board exams The detailed, stepbystep solutions will help you understand the concepts better and clear your9th Class Formulas For Algebraic Identities Given below are the algebraic identities which are considered very important maths formulas for Class 9 (a b) 2 = a 2 2ab b 2 (a – b) 2 = a 2 – 2ab b 2 (a b) (a – b) = a 2 b 2 (x a) (x b) = x 2
(x y)^2 formula class 9のギャラリー
各画像をクリックすると、ダウンロードまたは拡大表示できます
 |  |  |
 |  |  |
 |  |  |
 |  |  |
「(x y)^2 formula class 9」の画像ギャラリー、詳細は各画像をクリックしてください。
 |  | |
 |  | |
 |  |  |
 |  |  |
「(x y)^2 formula class 9」の画像ギャラリー、詳細は各画像をクリックしてください。
 |  |  |
 |  |  |
 |  |  |
 |  |  |
「(x y)^2 formula class 9」の画像ギャラリー、詳細は各画像をクリックしてください。
 |  | |
 |  |  |
 |  | |
 |  |  |
「(x y)^2 formula class 9」の画像ギャラリー、詳細は各画像をクリックしてください。
 |  |  |
 |  |  |
 |  |  |
 |  |  |
「(x y)^2 formula class 9」の画像ギャラリー、詳細は各画像をクリックしてください。
 |  |  |
 |  |  |
 |  | |
 |  |  |
「(x y)^2 formula class 9」の画像ギャラリー、詳細は各画像をクリックしてください。
 |  | |
 |  |  |
 |  | |
 |  |  |
「(x y)^2 formula class 9」の画像ギャラリー、詳細は各画像をクリックしてください。
 |  |  |
 |  |  |
 |  |  |
 |  |  |
「(x y)^2 formula class 9」の画像ギャラリー、詳細は各画像をクリックしてください。
 |  |  |
 |  |  |
 |  |
Assertion If x = 2, y = 1 is a solution of the equation 2x 3y = k, then the value of k is 7 Reason The solution of the line will satisfy the equation of the line Answer Answer (a) We know that the solution of the line will satisfy the equation of the line So, Reason is correct Since x = 2, y =1 is a solution of the given linear equation, we haveSolution 1 y = 3x 5 is a linear equation in two variables and it has infinite solutions As for every value of x there will be a value of y satisfying above equation and vice versa Hence, the correct answer is (iii) Solution 2 (i) 2x y = 7 For x = 0 2 (0) y = 7 y = 7
0 件のコメント:
コメントを投稿