If xy = K + 1 / 4, is x proportional to y when k is constant? Such as the title

In inverse proportion

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1. Xy = K + 3, when k is constant, X and y_ C = 3.14d, when C is constant, 3.14 and D_ Proportion
2. Given xy = K + 13, X and Y () A. Negative proportion B. positive proportion C. out of proportion D. not sure
3. Given that the set P = {(x, y) │ y = k, X ∈ R, K is constant}, q = {(x, y) │ y = (a ^ x) 1, a > 0, a ≠ 1, X ∈ r}, P ∩ q = has only one subset, then the value range of K?
4. Given the set P = {(x, y) | y = k}, q = {(x, y) | y = ax + 1}, and P ∩ q = ∞, then the value range of K is () A. （-∞，1）B. （-∞，1]C. （1，+∞）D. （-∞，+∞）
5. The solution of the equation 3x + YK + 2,2x-y = 5 is x > 0, y < 0, and the value range of K is obtained 3x+y=k+2
6. Let X and y be real numbers, and x1 − I + Y1 − 2I = 51 − 3I, then x + y=______ ．
7. Total differential z = (x ^ 2 + y ^ 2) / (x ^ 2-y ^ 2)
8. Find a few English words to describe the character Hand it in tomorrow
9. On monotone boundedness of sequence function Let f (x) be monotonically bounded in (- ∞, + ∞) and {xn} be a sequence. The following proposition is correct () If a {xn} converges, then {f (xn)} converges B if {xn} is monotone, then {f (xn)} converges How to judge these two options?
10. The relationship between evaporation rate of water and temperature? Such as the title Eliminate air flow
11. XY + 2 = K + 8. When k is constant, X is proportional to y?
12. If the intersection of the image of the first-order function y = KX + B and the inverse scale function y = KX is (2,3), then K=______ ，b=______ ．
13. Plane equation defined by normal vector and constant of plane The plane equation defined by normal vector N and constant D is x · n = D
14. What does the direction cosine of the normal vector of a plane equation mean?
15. In higher mathematics, how to find the normal vector of a plane equation?
16. Given that point m (1,2, - 1) is in plane a and a normal vector of plane a is (- 1,1,3), the equation of plane a is obtained
17. [kneeling] given the normal vector of a plane and the two points it passes through, how to find the equation of the plane? Of course, it's a point method. In fact, you only need to know the point But my question is, if we bring in another known point, the result of the plane equation will be different. Isn't that contradictory?
18. Given the plane intercept equation x / A + Y / B + Z / C = 1, how to get the normal vector of the plane directly through the equation without converting it into a general equation
19. Given that the plane passes through point m (1, - 1,1) n (0,1, - 3) and is parallel to vector a (1,1,1), the plane equation is solved
20. If a plane passes through a point (1,0,1) and is parallel to the vectors a = {2,1,1} and B = {1, - 1,0}, the plane equation is solved?