Answer: 8/5.
- A 8/5
- B 2
- C 6/5
- D 10/5
Correct answer: A. 8/5
Explanation: Distance = |9 − 1|/√(3²+4²) = 8/5.
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.