Five years ago an alligator was 2 1/6ft long but today the alligator is three times longer how long is the alligator now

The alligator would be 6 1/2 ft long

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