A person stands 15 meters east of an intersection and watches a car driving towards the intersection from the north at 1 meter per second. At a certain instant, the car is 8 meters from the intersection.
What is the rate of change of the distance between the car and the person at that instant (in meters per second)?
Answer Choices are -2.125, -square root65, -8/17, and -17

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14