There are 7 people on a bus each person has 7 backpacks in each backpack there are 7 dogs for every dog there are 7 puppies how many legs are on the bus

7people×7backpacks each=49 backpacks total
49backpacks×7dogs=343dogs
343dogs×7puppies each=2,401 dogs total
2,401dogs/puppies×4legs each=9,604 legs
7people×2legs each=14 legs
9,604+14=9,618 legs total

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so the perpendicular line goes through the given pointyou would get a perpendicular line at some random location

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.