The angle between the positive horizontal axis and a given line is 135

^{o}. 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

##### Correct Answer: Option C

##### Explanation

m = tan 135^{o} = -tan 45^{o} = -1

(frac{y – y_1}{x – x_1}) = m

(frac{y – 3}{x – 2}) = -1

= y – 3 = -(x – 2)

= -x + 2

x + y = 5