A bird is flying 10 feet above the water. A fish is swimming 4 feet below the water

it should be -4

Step-by-step explanation: Hope this help

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

answer: 4 (:

step-by-step explanation: