Question

20.Find the value of k if the line joining points (2,k) and (-1,1) has slope 1/2
21.Find slope of the line whose inclination is
 150
22.Find angle between lines whose slopes are 3/2 and 7
23.Find the value of x so that the line through (3,x) and (2,7) is parallel to the
line through (1,4) and (0,-6)
24.Find the value of p so that the line through (p,-3) and (5,-1) is perpendicular
to the line through (4,5) and (0,-2)
25.Prove that points (4,3), (6,4) , (5,6) and (3,5) taken in order are vertices of
a square.

Answer 1

please mark as brainliest

Answer 2

Answer:

angle is 60°

hence 60° is the correct answer pls mark me as brainlist pls ❤️❤️