Answer: (4,5).
- A (4,5)
- B (5,6)
- C (6,7)
- D (3,4)
Correct answer: A. (4,5)
Explanation: Section formula: x = (1×8+2×2)/(1+2) = 12/3 = 4; y = (1×9+2×3)/3 = 15/3 = 5. Point = (4,5).
The slope of a line is the ratio of vertical change (rise) to horizontal change (run) between any two points on it - equivalently, the tangent of the angle θ the line makes with the positive x-axis.