Multiply or find the special product. (simplify your answer completely.)
[(x − 8y) + z][(x − 8y) − z]

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