A slope field has the following property: at every point with x=0 the line segments have slope −1; at every point with x=1 the segments are horizontal; and at every point with x=2 the segments have slope 1. Which differential equation is most consistent with these observations?
a) dxdy=1−x
b) dxdy=x(x−1)
c) dxdy=x−1
d) dxdy=2−x