Where c consists of the top half of the circle x2 + y2 = 25 from (5, 0) to (−5, 0) and the line segment from (−5, 0) to (−6, 4)?

ok then what happened.

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