Respuesta :
Answer:
A) and C) They are perpendicular because they have slopes that are opposite reciprocals of -4 and 1/4
Step-by-step explanation:
Equation of the line
y-xo = m (x-xo)
(xo, yo): point where the line passes
m: slope of the line
Segment AB: y-9= -4 (x + 1) Â , mAB= - 4
Segment CD: Â y-6= 1/4 (x-3) Â ,mCD= Â 1/4
If the lines are perpendicular, the product of the slopes will be −1
mAB*mCD= Â - 4 * Â 1/4 = -1