Question

Find k,if R(1,-1),S(-2,k)and slope of line RS is-2

Answer 1

Answer:

4 is the answer

Step-by-step explanation:

thank you for the question

Answer 2

Step-by-step explanation:

Formula for slope of line is :-

m = (y2 - y1) / (x2 - x1)-------------eq1

where,

m (slope) = -2

(1,-1),(-2,k)

y1 = -1

y2 = k

x1 = 1

x2 = -2

now, put all points in eq1

m = (y2 - y1) / (x2 - x1)

-2 = {k- (-1)} / (-2 - 1)

-2 = (k+1) / (-3)

-2 × -3 = k+1

6 = k+1

k = 5