Answer: 5.
- A 5
- B -5
- C 7
- D 4
Correct answer: A. 5
Explanation: r = sqrt(g²+f²-c) = sqrt(9+16-5) = sqrt(20) = 2√5. Wait: g=-3, f=4, c=5. r = sqrt(9+16-5) = sqrt(20) = 2√5. But option says 5... Let me recalculate. Actually r² = g²+f²-c = 9+16-5 = 20, r = 2√5, not 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.