I can't draw a graph directly. However, I can guide you on how to draw it and determine the slope visually.
Drawing the Graph:
- Axes: Draw a horizontal (x) axis and a vertical (y) axis.
- Labels: Label the x-axis with your independent variable (e.g., Time) and the y-axis with your dependent variable (e.g., Distance).
- Scale: Choose scales for both axes that accommodate all your data points.
- For the x-axis, your values range from 11.6 to 25.5. A scale from 10 to 30 would work well.
- For the y-axis, your values range from 10.4 to 21.5. A scale from 10 to 25 would work well.
- Plot Points: Carefully plot each (x,y) data pair from your table onto the graph.
- (11.6,10.4)
- (15.0,13.0)
- (18.5,16.0)
- (22.0,19.0)
- (25.5,21.5)
- Line of Best Fit: Use a ruler to draw a straight line that best represents the trend of the plotted points. This line should pass as close as possible to all points, with roughly an equal number of points above and below it.
Determining the Slope on the Graph:
-
Choose Two Points on the Line: Select two distinct points that lie on your drawn line of best fit. It's best to choose points that are far apart to minimize error. Let's call these points (x1​,y1​) and (x2​,y2​).
- Important: These points should ideally be points you can read easily from your graph's scale, not necessarily the original data points.
-
Calculate the Slope: Use the slope formula:
Slope (m) = (y2​−y1​)/(x2​−x1​)
- Example: If you chose (15,13) and (25,21) from your line of best fit (these are examples, use points from your drawn line):
m=(21−13)/(25−15)
m=8/10
m=0.8
The slope you determine from the graph should be close to the value you calculated earlier (≈0.8).
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