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Line L passes through the points (a, 2a) and (b, 2b), where a ? b. Determine the slope of line L.

Line L passes through the points (a, 2a) and (b, 2b), where a ≠ b. Determine the slope of line L.

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Philip P. | Effective and Affordable Math TutorEffective and Affordable Math Tutor
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Line L passes through the points (a, 2a) and (b, 2b), where a ≠ b. Determine the slope of line L.
 
The slope, m, of a line is equal to the change in y over the change in x between any two points, (x1,y1) and (x2,y2), on the line.
 
m = (y2-y1)/(x2-x1)
 
In your case (x1,y1)=(a,2a) and (x2,y2)=(b,2b).  Plug those values into the slope formula above to get the answer.