Question

The point (1,2) ,(3,8)and (x,20) are collinear if x=

Answer 1

Answer:

x = 22/3

Step-by-step explanation:

since

y2 - y1 / x2 - x1 = y- y1 / x - x1

using (1,2) and (3,8) form equation

8-2/3-1 = y-2/x-1

6x -6 = 2y - 4

3x - y - 2 = 0

put ( x,20)

3x -20-2 = 0

3x = 22

x = 22/3