The set of points P(0, 3), Q(2, 0), R(4, -3) are collinear and the line has a slope of _____.

1. 1/2
2. -3/2
3. - 1/2
4. 3/2

A triangle has vertices P(1, 3), Q(3, 5), and R(6, 2). The slope of the median to QR is

1. 1
2. 1/7
3. -1/2