Which statement is correct?
A horizontal line has no slope.
A vertical line has a slope of zero.
A line that rises from left to right has a positive slope.
A line that falls from right to left has a negative slope.
All of the statements are correct.
All four statements are correct.
1. A horizontal line has no slope. This is true because a horizontal line is parallel to the x-axis and does not rise or fall.
2. A vertical line has a slope of zero. This is true because a vertical line is parallel to the y-axis and does not have any horizontal movement.
3. A line that rises from left to right has a positive slope. This is true because a positive slope indicates an upwards direction. When a line rises from left to right, it means that the y-values increase as the x-values increase.
4. A line that falls from right to left has a negative slope. This is true because a negative slope indicates a downwards direction. When a line falls from right to left, it means that the y-values decrease as the x-values increase.