The light vehicle market share in percent in a particular country for pickup trucks is shown in the graph Let x 0 represent 1995 x 4 represent 1999 and so on a Use the points on the graph to write equations for the line segments in the intervals 0 4 and 4 8 b Define this graph as a piecewise defined function f x Percent Ay Pickup Truck Market Share 45 43 0 424 41 39 37 35 33 31 1995 1997 4 39 7 8 32 1 1999 2001 2003 Year Q a The equation for the line segment in the interval 0 4 is y 0 675x 42 4 Simplify your answer Use integers or decimals for any numbers in the expression The equation for the line segment in the interval 4 8 is y Simplify your answer Use integers or decimals for any numbers in the expression