Question

Line $l$ in the xy-plane contains points from each of Quadrants $II,III$ and $IV$, but no points from Quadrant $I$.

Which of the following must be true?

• A. The slope of line $l$ is undefined.
• B. The slope of line $l$ is zero.
• C. The slope of line $l$ is positive.
• D. The slope of line $l$ is negative.

Answer 1

The correct option is D The slope of line $l$ is negative.

Since it is given that the line in the $xy$ plane contains points from each of quadrants ||,||| and |V, but no pints from quadrant | therefore, the above graph forms which clearly shows that the slope of the line is negative.