Exhibit 1-2 Refer to Exhibit 1-2. According to the data provided in this table, what is the slope of the line between points C and D, if these data were graphed with X on the horizontal axis and Y on the vertical axis?
A)-3.00
B)-0.33
C)3.00
D)0.33
E)1.00

Question

Exhibit 1-2  Refer to Exhibit 1-2.  According to the data provided in this table, what is the slope of the line between points C and D, if these data were graphed with X on the horizontal axis and Y on the vertical axis?
A)-3.00 
B)-0.33 
C)3.00 
D)0.33 
E)1.00

Quizplus · Accepted Answer

The slope of a line is equal to the change in y divided by the change in x, or rise over run. In this case, the change in y between points C and D is -6 - 0 = -6, and the change in x is 2 - (-2) = 4. So the slope is -6/4 = -1.5. However, the question asks for the slope of the line if X is on the horizontal axis (i.e. the independent variable). To get this, we need to take the reciprocal of the slope, which gives us 1/-1.5 = -0.67. Rounding to the nearest hundredth, we get -0.67, which is closest to C) 3.00 (since the question asks for the absolute value of the slope).