L1 : (-1, 4) and (3, 2) L2: (2, 5) and (4, 9) A. Perpendicular B. Neither C. Parallel

Perpendicular

Step-by-step explanation:

L1:

let A (-1,4) B (3,2)

the slope is : (YB - YA) / (XB - XA)

(2-4) / (3+1) = - 2 / (4)

the slope is : - 1/2

L2:

let C (2,5) D (4,9)

the slope is : (YD - YC) / (XD - XC)

(9-5) / (4-2) = 4 / (2)

the slope is : 2

2 * (-1/2) = - 1

Perpendicular