bmwhype2 wrote:

bmwhype2 wrote:

Does the point of intersection of line y=Kx+ B and line x=KY+B have a negative coordinate?

1. k > 0, b>0

2. k > 1

Please walk me thru the answer. thanks

sorry.

Actually, if there is no error and the 2nd graph is vertical line, then the answer is C.

Let's see :

Functions are : y = kx+b, x = b/(1-k)

1 is not sufficient because if b and k both positive then :

y = kx + b passes I, III, IV quadrants.

x = b/(1-k) when k <1>1 then it is vertical to the left of Y and the intersection will be in either quadrant III or IV and 1 or 2 coordinates will be negative.

2 is not sufficient because it gives us obviousely not enough information.

Thus the unswer is C