How does a line with a slope of -2 visually differ from a line with a slope of 2 on a graph?

• A. Both lines slope upward from left to right.
• B. The line with a slope of -2 is horizontal, while the line with a slope of 2 is vertical.
• C. Both lines slope downward from left to right.
• D. The line with a slope of -2 slopes downward from left to right, while the line with a slope of 2 slopes upward.

Answer: (D)