Mathematics for IGCSE & O level - Coordinate Geometry (Section 4 - No. 35)
What is the formula for the gradient of a line?
(x2 - x1) / (y2 - y1)
(x1 + x2) / 2
(y2 - y1) / (x2 - x1)
sqrt((x2 - x1)^2 + (y2 - y1)^2)
Explanation
The gradient is the change in y divided by the change in x.
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