Given that point a (x, - 4) and point B (3, y) are symmetric about X axis, then the value of X + y is___ ．

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• 1. Given that the function value y of the positive scale function y = KX increases with the increase of X, the image of the first-order function y = K-X is approximately the same
• 2. If the image of positive scale function y = KX passes through the point (- 3,4), find the relation of this function
• 3. It is known that the area of the triangle formed by the image of the linear function y = - 2x + B [b > 0] and two coordinate axes is equal to 9. Find the solution set of the value of B - 2x + B ≤ 0
• 4. As shown in the figure, the minimum area of △ AOB can be obtained when the image of a function of degree passes through the point P (2,3), the positive half axis and a of the intersection x-axis, and the positive half axis and B of the intersection y-axis
• 5. The image of the linear function y = x + 3 and the area of the triangle surrounded by the x-axis and y-axis are
• 6. The image of a given function passes through the intersection of the line y = - x + 1 and the X axis And the ordinate of the point of intersection with the Y axis is - 2, so we can find the analytic expression of this first-order function
• 7. It is known that the intersection of the image of y = (3a-7) x + A + 1 and the Y axis is above the X axis It is known that the intersection of the image of the first-order function y = (3a-7) x + A + 1 and the y-axis is above the x-axis, and when X1 is less than x2 The corresponding function value y satisfies that Y1 is greater than Y2, and the value range of a is obtained
• 8. For the first-order function y = (3a-7) x + A-2 of X, the intersection of the image and Y axis is below x, and Y decreases with the increase of X, then the value range of a is______ ．
• 9. It is known that the intersection point of the image and the Y-axis of the linear function y = (3a-7) x + A-2 of X is above the x-axis
• 10. Given that the image of a function passes through a point (1,2), and the product of the abscissa of the intersection of the image and the X axis and the ordinate of the intersection of the image and the Y axis is 9, the analytic expression of the function is obtained
• 11. Given that point a (x, - 4) and point (3, y) are symmetric about X axis, then the value of X + y is
• 12. It is known that M = X-Y, n = XY, and m, n denotes (X & # 179; + Y & # 179;) &# 178; Such as the title
• 13. High school mathematics problem "please write the process" m = X-Y, n = XY, try to use the formula of M, n to express (x ^ 3 + y ^ 3) ^ 2
• 14. Given (x + y) ^ 2 = m, (X-Y) ^ 2 = n, try to use Mn to express (1) XY (2) x / y + Y / X
• 15. Given m = X-Y, n = XY, try m, n denotes (x ^ 2 + y ^ 2) ^ 2
• 16. Given m = x - y, n = XY, try to use M, n to represent (X3 + Y3) 2 The square of (the third power of X + the third power of Y)
• 17. Given that point (x, 14-y) and point (- 1-y, 2x) are symmetric about y axis, then XY=
• 18. Given that point a (x, 4-y) and point B (1-y, 2x) are symmetric about the Y axis, find the value of x-2y
• 19. Taking a circle as an example, this paper discusses the characteristics of the equation of a curve if it is symmetrical about the X axis, Y axis, coordinate origin and passes through the coordinate origin? Based on the above conclusions, the principles and methods of establishing the Department are discussed
• 20. The linear equation of y = 2x-1 about X-axis symmetry, about Y-axis symmetry and about origin