Question

The ratio in which yz- plane divides the line joining the points A (3, 1, -5) and B( 1, 4, -6) is

1) -3 : 1 2) 3 : 1 3) -1 : 3 4) 1 : 3​

Answer 1

Answer:

1.-3:1

Step-by-step explanation:

Given the points are A(3,1,-5) and B(1,4,-6)

Let the ratio be k:1

P(k+3/k+1,4k+1/k+1,-6k-5/k+1)

k+3/k+1=0

k+3=0

k=-3

ratio =-3:1