4) A right triangle is constructed by taking a point (x.y) on the graph of the function {(x) = , drawing a iine vertically downward to the xaxis. then connecting both of those points to the origin as in the picture below. Denote the length of the base of the triangle by x. the height of the triangle by y (in meters). and the Area of the triangle by A. When x = 4 m 1 (and only at that moment). the height y is shrinking at a rate of 5 m/min. Find the value of [$] x:4m d .. _, | 3 g ,3 I'll/9m- (le) 2