Data Sufficiency

In the rectangular coordinate system, line k is defined by the equation x - 2y + n = 0. What is the value of n?

(1) The x-intercept of line k is 8.

(2) The y-intercept of line k is -4.

Hi,
x-2y+n =0
From(1) : line pass through (8,0).So, 8+n=0
Sufficient
From(2) : line pass through (0,-4). 8+n=0
Sufficient

Hence, D

IMO D
a)x-intercept means value of x when y=0. Thus 2 variables are known. we can find n
Sufficient
b)y-intercept means value of y when x=0. Thus 2 variables are known. we can find n
Sufficient

IMO D

From 1 : line passes through (8,0). Sufficient
From 2 : line passes through (0,-4). Sufficient

OA D