Question 4 (1 point) An object moves in a straight line with its position at time t seconds given by s()) = -31+, where s is measured in metres. Determine the velocity of the object when t = 3. O-3 m/s Com/s 3 m/s 6 m/s Question 5 (1 point) What is the equation of the tangent to y = |/x -5 3 when x = 3? y= 3x -1 y= 3x - 15 y= 9x - 19 Y= 18x -46