Check -_ for instructional material to complete this problem. Use the slope formula to nd the slope of the line that passes through the two given points. State whether the line is increasing, decreasing. horizontal. or vertical. (15) and (6.5} Select the correct choice below and, if necessary, ll in the answer box to complete your choice. 0 A- The slope is m = :|. {Type an integer or a simplied fraction.) Q) B. The slope is undened. Is the line increasing, decreasing, horizontal, or vertical? 0 A. horizontal O B. increasing 0 C. vertical 0 D. decreasing