BTGmoderatorDC wrote:
In the xy-plane shown, is the slope of the line L negative ?
(1) Line L passes through a point that is in quadrant III
(2) Line L passes through a point that is in quadrant IV
Target question: Is the slope of the line L negative ?
After scanning the two statement, I see that we can jump straight to . . .
Statements 1 and 2 combined
The COMBINED statements tell us that line l passes through quadrants III and IV.
There are several lines that satisfy BOTH statements. Here are two:
Case a:
In this case, the answer to the target question is
NO, the slope of line l is NOT negative
Case b:
In this case, the answer to the target question is
YES, the slope of line l IS negative
Since we cannot answer the
target question with certainty, the combined statements are NOT SUFFICIENT
Answer: E
Cheers,
Brent
