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Mathematics
OpenStudy (anonymous):

On a map, Sandusky St. passes through coordinates (2, -1) and (4, 8). Pennsylvania Ave. intersects Sandusky St. and passes through coordinates (1,3) and (6,2). Are these streets perpendicular? Explain.

OpenStudy (anonymous):

find the slope of each line using: (Y2-y1) / (x2-x1), two lines will be perpendicular if their slope is the opposite reciprocal so like m=2 and m=-1/2 http://www.purplemath.com/modules/slope2.htm

hero (hero):

The streets are not perpendicular unfortunately.

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