1. Let "● and" ■ "denote different objects respectively. As shown in the figure, the first two balances shall be balanced. If the third balance is to be balanced, then the number of ■ to be placed at"? "Is () A.5 B.4 C.3 D.2 2. If (2y-3x) / 5 = 1, then 9x-6y= 3. In y = KX + B, when x = - 1, y = 5, then k =, B= 4. Given that x = 3 / 5, y = 6 / 5 is the solution of the system of equations x + 2Y = 3, 3y-x = 3, then the intersection coordinates of the linear functions y = - 1 / 2x + 3 / 2 and y = (x / 3) + 1 are 5. The solutions of the system of equations 3x-y = 26x-2y = 4 are - system 6. Given that the sum of X and Y in the solution of the system of equations 2x + y = 3 ax + 2Y = 4-A is 1, then a= The first one is multiple-choice questions. All of the following questions are filled in the blanks. Just get the right answer, Question 1: two on the left, one on the right, and one on the left One on the left, one on the right and one on the right of the second The third one is on the left, one is on the right? The third question: in y = KX + B, when x = - 1, y = 0; when x = 1, y = 5. Then k =, B=

1. Let "● and" ■ "denote different objects respectively. As shown in the figure, the first two balances shall be balanced. If the third balance is to be balanced, then the number of ■ to be placed at"? "Is () A.5 B.4 C.3 D.2 2. If (2y-3x) / 5 = 1, then 9x-6y= 3. In y = KX + B, when x = - 1, y = 5, then k =, B= 4. Given that x = 3 / 5, y = 6 / 5 is the solution of the system of equations x + 2Y = 3, 3y-x = 3, then the intersection coordinates of the linear functions y = - 1 / 2x + 3 / 2 and y = (x / 3) + 1 are 5. The solutions of the system of equations 3x-y = 26x-2y = 4 are - system 6. Given that the sum of X and Y in the solution of the system of equations 2x + y = 3 ax + 2Y = 4-A is 1, then a= The first one is multiple-choice questions. All of the following questions are filled in the blanks. Just get the right answer, Question 1: two on the left, one on the right, and one on the left One on the left, one on the right and one on the right of the second The third one is on the left, one is on the right? The third question: in y = KX + B, when x = - 1, y = 0; when x = 1, y = 5. Then k =, B=

Revised edition
1. Let "● and" ■ "denote different objects respectively. As shown in the figure, the first two balances are balanced. If the third balance is to be balanced, then the number of ■ to be placed at"? "Is (a)
A.5 B.4 C.3 D.2
2. If (2y-3x) / 5 = 1, then 9x-6y = - 15
3. In y = KX + B, when x = - 1, y = 5, then k = 5 / 2, B = 5 / 2
4. Given that x = 3 / 5, y = 6 / 5 is the solution of the system of equations x + 2Y = 3, 3y-x = 3, then the intersection coordinates of the linear functions y = - 1 / 2x + 3 / 2 and y = (x / 3) + 1 are (3 / 5,6 / 5)
5. There are (innumerable) solutions to the equations 3x-y = 26x-2y = 4
6. Given that the sum of X and Y in the solution of the system of equations 2x + y = 3 ax + 2Y = 4-A is 1, then a = 2