Question 33
Coordinate GeometryThe angle between the positive horizontal axis and a given line is 135°. Find the equation of the line if it passes through the point (2, 3)
- A.x − y = 1
- B.x + y = 1
- C.x + y = 5
- D.x − y = 5
Show the answer and explanation
Answer: C (x + y = 5)
Explanation
Gradient = tan 135° = −1. So y − 3 = −(x − 2), which gives x + y = 5.