Question

find the value of k if the points p(5,4) Q(7,k) and r(9,-2) are collinear​

Answer 1

Answer:

K = 8/3

Step-by-step explanation:

P(5,4) , Q(7 , k ) and r ( 9, - 2 ) Are collinear .

So the slope of the line PQ and line PR should be same .

Slope of PR = 9 - 5 / - 2 - 4 = 4/-6 = -2/3

Slope of PQ = k - 4 / 7 - 5 = k - 4 / 2

So

- 2/3 = k - 4 / 2

- 4 = 3k - 12

3k = 8

k = 8/3

Answer 2

Answer:

Answerin attachment....

Hope it will help you .