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Apex:true
Slope of line: (y2 -y1)/(x2-x1)
You need two points before you can calculate the slope.
Choose two distinct points from the table and designate their coordinates as x1, y1 and x2, y2. The slope of the line then will equal (y2 - y1)/(x2 - x1).
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Apex:true
Slope of line: (y2 -y1)/(x2-x1)
This is true as long as the slope of the line is constant, if it is a straight line and doesn't curve, then yes it doesn't matter which points are chosen.
The slope is calculated as: y1-y2/x1-x2 given two sets of points
Points: (-3, -1) and (3, -2) Slope: -1/6
You need two points before you can calculate the slope.
Choose two distinct points from the table and designate their coordinates as x1, y1 and x2, y2. The slope of the line then will equal (y2 - y1)/(x2 - x1).
Points: (x, y) and (x, y) Slope: y1-y2/x1-x2
0). Considering any TWO points, you can calculate the slope of the line between them like this: Slope = (difference between the y-values of the two points) divided by (difference between the x-values of the two points). Use this technique to examine your THREE points, like this: 1). Calculate the slope of the line between Point-2 and Point-1. 2). Calculate the slope of the line between Point-3 and Point-1. 3). If the two slopes are equal, then the three points all lie on the same line.