Final answer:
The slope of a line is the rise over the run and in Figure A1, the slope is given as 3. This means for every 1 unit increase in x, there is a 3 unit rise in y. To calculate the slope with two points, use the formula (Y2 - Y1) / (X2 - X1).
Step-by-step explanation:
The slope of a line, often represented by the letter m, indicates how steep the line is. The slope is defined as the ratio of the rise (the change in y) over the run (the change in x). In the provided Figure A1, the slope of the line is stated to be 3, which implies that for every unit increased in the horizontal axis (x), the vertical axis (y) increases by 3 units. To find the slope using two points on a line, you can use the formula m = (Y2 - Y1) / (X2 - X1). For example, using the points (6.4s, 2000m) and (0.50s, 525m) from the graph, you would subtract the y-coordinates and x-coordinates of the points respectively and then divide the two results to get the slope.