Given a point on the inverse scale function y = - X / 10 of point C, a vertical line is drawn to the coordinate axis through point C, and the vertical feet are a and B respectively, then the area of the quadrilateral aobc is

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• 1. It is known that the image of y = x-4 intersects with the x-axis at a, and it intersects with the image of y = KX + B at point C. the abscissa of point C is 3, y = KX + B intersects with the x-axis at B, and the face of triangle ABC If the area is 2 / 5, find the analytic formula of y = KX + B
• 2. It is known that the vertex a of RT △ ABC is the intersection point of the first quadrant of the image of the linear function y = x + m and the inverse scale function y = m / x, and s △ AOB = 3. If the extension of the line AC intersects another branch of the image of the inverse scale function at point D and makes the de ⊥ X axis at e through D, please judge which special triangle △ AOD is and prove it
• 3. It is known that the three vertices of triangle ABC are on the image with inverse scale function y = 1 / X (1) Let a (x1, Y1), B (X2, Y2), C (X3, Y3), find the linear equation of the height on the AB side and the height on the BC side If the title, the detailed process is appropriate, thank you
• 4. As shown in the figure, the vertex B of RT △ ABC is on the image with inverse scale function y = 12x, and the edge AC is on the x-axis. It is known that ∠ ACB = 90 °, a = 30 ° and BC = 4
• 5. The relationship between triangle area and K value in inverse scale function image I know that the area of the triangle enclosed by the points on the image and the coordinate axis perpendicular to the inverse scale function is equal to half of the area of the triangle. But if there is a point on the image, another point is at the origin, and the three sides are not perpendicular to the coordinate axis, is this conclusion true?
• 6. Analytic expression of inverse proportion function of triangle area
• 7. How to solve the triangle area of inverse proportion function
• 8. How to calculate the area of the triangle formed by the intersection of the first-order function and the inverse scale function and the origin of the coordinate?
• 9. Let the image of inverse scale function y = K / X and linear function y = ax + 1 intersect at a (- 1,2) B (2, - 1), and the area of triangle abo (o is the origin of coordinates)
• 10. Find the intersection coordinates a and B of the inverse scale function y = 2 / X and the linear function y = 2x-1, and find the area of the triangle AOB
• 11. As shown in the figure, the point P (a, b) is on a branch of the image with the inverse scale function y = x / K. PA is perpendicular to the X axis, and the perpendicular feet are a, B respectively. The area of the rectangular aobp is 2, and the solution of K is obtained The process is complete
• 12. As shown in the figure, point P (x, y) is on the image with inverse scale function y = 2 / X. through point P, make PA ⊥ X axis at point a, and make Pb ⊥ Y axis at point B. the area of rectangular OAPB is
• 13. On the hyperbola y=_ If there is a point P (m, n) PA on 6 / X perpendicular to X axis and Pb perpendicular to y axis, what is the area of rectangular paob?
• 14. Given that point P is a point on inverse scale function y = 24 / x, PA ⊥ X axis is at point a, Pb ⊥ Y axis is not at point a, the area of quadrilateral paob is______ Hurry up, I won't! Hurry up
• 15. Take the point P on the image of the linear function y = - x + 3, make PA perpendicular to the X axis and Pb perpendicular to the Y axis. If the s rectangle paob = 2, how many points can be found
• 16. Take the point P on the image of the linear function y = - x + 3, make PA perpendicular to the x-axis and Pb perpendicular to the y-axis. If the s rectangle paob = 9,4, how many points can be found It is helpful for the responder to give an accurate answer
• 17. As shown in the figure, point a is a point of the inverse scale function in the first quadrant image, AB and AC are perpendicular to the X axis and Y axis respectively, B and C are perpendicular feet, and rectangular aboc The area of the line ad is 3, and the coordinate of point D is (- 2,0). The line ad intersects the Y axis at e, and the point E is on the line OC, and CE = OE. (1) find the analytic formula of the inverse proportion function; (2) find the coordinate of point a; (3) find the analytic formula of the line ad
• 18. As shown in the figure, point a is a point of the inverse scale function in the first quadrant, AB and AC are perpendicular to the XY axis, B and C are perpendicular feet, and the area of rectangular aboc is 3 Mark as - 2, the line ad intersects the y-axis at point E, point E is on line OC, and Ce: od = 1:2 (1) find the analytic formula of inverse scale function (2) find the coordinate of point a (3) find the analytic formula of line ad
• 19. How to calculate the area of inverse scale function image?
• 20. As shown in the figure, if point a is on the image of function y = 2x (x > 0), then the area of rectangle aboc is______ A unit of square