A software designer is mapping the streets for a new racing game. All of the streets are depicted as either perpendicular or parallel lines. The equation of the lane passing through A and B is -7x + 3y = -21.5. What is the equation of the central street PQ?

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anonymous · Answer

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irishboy123 · Answer

find the slope  of the lane passing through A and B, you have the equation: -7x + 3y = -21.5. 

the slope of central street PQ will be -1/m where m is the slope of the lane  through A and B, as they are perpendicular.

you also know PQ passes through (7,6) so you have a line with slope -1/m passing through (7,6)