(1) Let the slope of the straight line L be k, then the straight line equation is set obliquely from the point, and k < 0 is known. Then, let x=0 and y=0, respectively, to find the intercept of the straight line L on the y axis and the x axis, and use inequality to find the k value when the triangle area is the smallest ~ ~

(2) Let the slope of the straight line L be k, then establish the straight line equation obliquely from this point, and then connect them with two parallel lines respectively, and use k to represent the abscissa of the two intersection points, and use the chord length formula "[root number (1-k 2)] * | x 1-x2 | = 3 times the root.