We are at altitude and they have a dunk contest. 7 people participate. How many ways can those 7 people finish 1st, 2nd and 3rd place?

it shoild be o

step-by-step explanation:

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c