Higher - The gradients of two perpendicular lines will always multiply to make –1. Make sure you are familiar with finding the equation of a line and calculating gradient to understand equations of ...
The gradient of a straight line describes the slope or steepness of the line. \(\text{Gradient =}~\frac{change~in~y}{change~in~x}\) To determine the gradient of a line: choose any two points on the ...
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