Lulie M.
asked • 09/13/19I'm having trouble with a math problem. Can you help?
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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1 Expert Answer
-7x + 3y = -21.5
3y = 7x - 21.5
y = (7/3)x - 21.5/3
Remember that parallel lines have the same slope, so if PQ is parallel, the slope is 7/3 and hopefully you can find the y-intercept.
Perpendicular lines have opposite reciprocal slopes, so if PQ is perpendicular, the slope is -3/7 and hopefully you can find the y-intercept.
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Denise G.
09/13/19