We know that the image of positive scale function y = K &; X intersects with the image of linear function y = K &; X-9 at point P (3, - 6). 1. Find K &;, K & 2. If the image of a linear function intersects the X and Y axes at points a and B respectively, the area of △ ABP is calculated

We know that the image of positive scale function y = K &; X intersects with the image of linear function y = K &; X-9 at point P (3, - 6). 1. Find K &;, K & 2. If the image of a linear function intersects the X and Y axes at points a and B respectively, the area of △ ABP is calculated

(1) by substituting the coordinates of point P for two functions, we can find K1 = -- 2, K2 = 5. (2) let x = 0, y = 0 respectively, and the coordinates of the intersection of the first-order function and the two axes are: (0, - 9) (9 / 5,0), so △ ABP area = & frac12; × 9 × 9 / 5 = 81 / 10