1. Which of the following best describes a Mathematical System? I. Defined and Undefined Terms II. Axioms. Postulates and Theorems *
A. I and II
B. Il only
C. I only
D. None​

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

the answer is b 4pi/3

got it down chief.