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Vinvika [58]
2 years ago
10

How to find the slope of a line on a coordinate plane?

Mathematics
1 answer:
zysi [14]2 years ago
5 0
The slope of a line is the ratio of vertical travel to horizontal travel, whether on a coordinate plane or in the real world. It can be positive or negative.

On an x-y plane, to find the slope of a line you would identify the coordiates of two points on the line, then form the ratio
  slope = (difference of y-coordinates)/(difference of corresponding x-coordinates)

Given two points (x1, y1) and (x2, y2), the slope is computed as
  slope = (y2 - y1)/(x2 - x1)


The points can be used in the computation in either order and the result will be the same. It is often convenient to have x2 > x1, so the denominator is positive. This can reduce errors in the arithmetic, but it is not required.

If the line is a vertical line, so that all x-values are the same, the slope is said to be "undefined."

On a conventionally drawn coordinate plane, a line with positive slope will go up to the right (/); a line with negative slope will go down to the right (\).
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