Express by an algebraic equation the statement that the line joining P(x,y)to the point (12,-5) has an inclination of arctan 1/3.

Question

Pls. answer

Answer 1

[y -(-5)]/(x-12) = (y+5)/(x-12) = 1/3

y + 5 = (x/3) -4

y = (x/3) -9