When the image with positive scale function y = 5x passes through the first quadrant and the second quadrant, point (0,) and point (1,) are on the image, y The image with positive scale function y = 5x passes through the second image Point (0,) and point (1,) are in their image Y increases with the increase of X?
Through the first quadrant and the third quadrant, points (0,0) and points (1,5) on their images, y increases with the increase of X
If the positive proportion function line y is parallel to - 3x + 1, then the positive proportion function relation is
y=-3x
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- 1. The expression of positive scale function of image passing through (1,2) is______ .
- 2. Given that the image of positive scale function y = KX passes through (2,3a) and (a, - 6) (a is greater than 0), the value of X when y = 3 is obtained
- 3. If the images of positive scale function and linear function pass through point m (3,4) If the images of the positive scale function and the first-order function pass through the point m (3,4), and the area between the images of the positive scale function and the first-order function and the Y axis is equal to 15 / 2, the analytic expressions of the two functions are obtained
- 4. A problem of positive proportion function in the second grade of junior high school, It is known that y + m is proportional to x-n, and when x = 2, y = 3; when x = 1, y = - 5. Find the value of y when x = - 1 I need it tonight
- 5. Proportion is divided into positive proportion and negative proportion
- 6. Fill in the blanks and judgment questions of positive and negative proportion exercises, 1. 35: () = 20 △ 16 = = ()% = () (fill in decimal) 2. Because x = 2Y, X: y = (): (), X is proportional to y 3. The side area of a cylinder is fixed, and the circumference of its bottom is proportional to its height 4. The circumference of a circle is proportional to its radius 5. The ratio of edge length of two cubes is 1:2, and the ratio of their volume is (): () 6. With the same tiles, shop 64 square meters to 320, as such, shop 20 square meters to () pieces 1. The ratio of number a to number B is 3:4, and the number a is 3 / 4 of the number B 2. When 10 grams of pesticide are dissolved in 90 grams of water, the ratio of pesticide to water is 9:1 3. In the 800 meter race, the speed of an athlete is inversely proportional to the time spent 4. A parallelogram has a certain area, and its base and height are in direct proportion 5. The weight of peanut is proportional to the weight of peanut oil 6. If the actual distance is constant, the distance on the map is in direct proportion to the scale 7. The volume of a cube is constant, and the area of its base is inversely proportional to its height 8. The total amount of subscription to Hebi daily is proportional to the number of copies 9. When the total number of parts is fixed, the number of produced parts is inversely proportional to the number of unproductive parts 10. A person's weight is directly proportional to his height 11. The circumference of a rectangle is fixed, and its length and width are in inverse proportion 12. The total amount of water is fixed, and the amount of water used is inversely proportional to the amount of water remaining 13. The radius of a circle is proportional to its area 14. A scale is a ratio, so it has no unit
- 7. Mathematical inverse proportional function It is planned to build a rectangular lawn with an area of 600. The functional relationship between Y length and x width? Y: x = 3:2, what are the length and width respectively? It's all wrong
- 8. A problem of inverse proportion function As shown in the figure, the image of the positive scale function y = 1 / 2 x and the image of the inverse scale function y = K / X (K ≠ 0) in the first quadrant intersect at point a, cross point a to make a vertical line of the X axis, the perpendicular foot is m, and the known area of △ OAM is 1, (1) Finding the analytic expression of inverse proportion function (2) If B is an inverse scale function, and the abscissa of point B is 1 at the point on the first quadrant image (point B does not coincide with point a), find a point P on the X axis to minimize PA + Pb
- 9. Judging inverse proportion function If the area of the trapezoid is fixed, is the median line inversely proportional to the height?
- 10. A judgment question A project can be completed in 6 days with the cooperation of Party A and Party B. If Party A does it alone in 10 days, then Party B does it alone in 15 days
- 11. If the inverse scale function y = KX passes through (- 3,2), then the image______ Quadrant
- 12. Given the function y = (M-3) x ^ (m ^ 2-10), when what is the value of M, it is an inverse scale function? In which quadrant is his image located
- 13. Let the function y = (m-2) x * M-4 be an inverse scale function. (1) find the value of M. (2) draw the image of this function and point out which quadrant is its image located? Let y = (m-2) x * M-4 be an inverse proportional function (1) Finding the value of M (2) Draw an image of this function and point out which quadrants its image is in? (3) If the line y = KX intersects with the image of this function at two points a and B, and the ordinate of point a is 2, it is the solution set of the inequality (m-2) x * M-4 > KX about X
- 14. Given a positive proportional function and a first-order function, their images pass through the point P (- 3,3), and the image of the first-order function intersects with the Y axis at the point Q (0, - 2), the analytic expressions of the two functions are obtained
- 15. A function image translation problem How is the image of F (x) translated from the image of F (x-1)? Let's take an example,
- 16. What is the relationship between the image translation of linear function and X and K?
- 17. On the translation of function f (x) on image 1. How to translate f (x) on the image to get f (x + 1) 2. How to translate f (x) on the image to get f (2x) 3. How to translate f (x) on the image to get f (- x) 4. How to translate f (x) on the image to get f (1 / x) How to translate f (x) on the image to get f (x-1) What function is f (x), you don't know what function it is, how do you know how to translate it And how do you know that the axis of symmetry of F (x-1) and (3-x) is x = 1 5555555555555555555555
- 18. Function image translation problem! A function y = f (x) 1. What is the image after the abscissa unchanged, the ordinate changed to the original a-fold and reduced to the original a-fold? 2. What is the image after the abscissa unchanged, the abscissa changed to the original a-fold and reduced to the original a-fold?
- 19. Why can the vector translation point be directly moved, while the function needs to be done by undetermined coefficient method?
- 20. What is the principle of inverse scale function translation left plus right minus up plus down minus