99-4-2-22-2-3-4--4--3-2-3-4-5-6-6-3 -3-2-3-4--5-6-5-4-

18

REASON: You just do the maths.

When you have the double subtraction sign infront of the 4, 3, and 5 I'm going to take it as if it's a negative.

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