1. The slope of the line passing through the point (5,5) is 5/6. All of the following points could be on the line except
A. (2.5, 2)
B. (11, 10)
C. (8, 7.5)
D. (-1, 0)
E. (-7, -5)
2. For a wall of a given material and of a fixed surface area, the rate of heat loss by conduction through the wall is inversely proportional to the thickness (T) of the wall, and directly proportional to the temperature difference (d) across the wall. The rate of heat loss could be given by which of the following expressions?
A. 2d/T
B. 2 T/d
C. 2d + ½ T
D. 2(d + ½ T)
E. T/d
3. The average (mean) number of children per family in the village is approximately
A. 2.4
B. 2.0
C. 1.8
D. 1.5
E. 1.0
4. The difference between the median and the mode of the number of children per family is
A. 2.5
B. 2.0
C. 1.5
D. 1.0
E. 0