A figure is attached below to illustrate a geometric problem.
Correct: @
To determine the nature of the line, we look at its slope. The line goes from point A (50,100) to (200,150). The slope m = (y2 - y1) / (x2 - x1) = (150 - 100) / (200 - 50) = 50 / 150 = 1/3. Since the slope is not infinite (which would indicate a vertical line) or 0 (which would indicate a horizontal line), and it's not 1, the correct answer is that the slope of the line is neither vertical, horizontal, nor 1.