book Maths Puzzle Numerical Ability

A line in the Cartesian plane passes through the points (-2, 4) and (2,-1). What are the rise and the run of the line?

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The power p (in watts) generated by a windmill that has efficiency E is given by the formula P=0.31ED^2V^3, where D is the diameter (in feet) of the windmill blades and V is the wi can you give me the seven group of number system of algebra and describe it one by 0ne