SOLUTION: Once you have the graph of a line, how can you find its slope? Does it matter which points you choose to find the slope? Does the slope vary depending on your choice of points?

Question 132019: Once you have the graph of a line, how can you find its slope? Does it matter which points you choose to find the slope? Does the slope vary depending on your choice of points?
Answer by rapaljer(4671) (Show Source): You can put this solution on YOUR website!
Find ANY two points on the graph. It doesn't matter which points you use, or which direction you go, as long as they are two distinct points on the line. Then measure the vertical and horizontal distances between the two points. Remember, then that slope is the VERTICAL distance divided by the HORIZONTAL distance. If the line is going UPHILL (up on the right side!), then the slope is positive. If the line is going DOWNHILL (down on the right side!), then the slope is negative.
R^2

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