Determine K' if the figure is reflected across the x-âxis. K A. (4, 1) OB. (1,-4) OC (1,-4) D. (1, 4)

The amount of time in seconds it takes for a swimmer to hear a single, hand-held, starting signal is given by the formula below, where (x,y) is the location of the starter (in meters), (0,p) is the location of the swimmer (in meters), and C is the air temperature (in degrees Celsius). Assume that the starter is located at the point (4,-2). Answer parts a and b below. t(x,y.p.C) = √²+(y-p)² 331.45+0.6C a. Calculate t(4, -2,30,20) and t(4, -2,20,20). Could the difference in time change the outcome of a race? t(4, -2,30,20) = (Round to five decimal places as needed.) Ay p Swimmer Starter (4,-2) P

11.) Suppose y varies directly with x. If x is -7 when y is 3, what is x when y is -5? a. -11 2/3 b. -4 1/5 c. 4 1/5 d. 11 2/3