Given two straight lines L1: MX + 8y + n = 0 and L2: 2x + MY-1 = 0, find the value of M, N, satisfying the following conditions. (1) L1 and L2 intersect at point (m, - 1) (2) L1 is parallel to L2

Given two straight lines L1: MX + 8y + n = 0 and L2: 2x + MY-1 = 0, find the value of M, N, satisfying the following conditions. (1) L1 and L2 intersect at point (m, - 1) (2) L1 is parallel to L2

(1) L1 and L2 intersect at point (m, - 1)
m^2-8+n=0
2m-m-1=0
m=1
n=7
(2)
m/2=8/m≠n/(-1)
M ^ 2 = 16, M = 4 or M = - 4
m=4 n≠-2
m=-4 n≠2