Can someone help? Don’t need any working out

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

i dont know the answer but here's a picture of a dog

answer: answer is b.

[m < b = 120º]

step-by-step explanation: