Question

if (x,1) (1,2)(0,y+1) are colinear points then find 1/x+1/y​

Answer 1

Answer:

1

Step-by-step explanation:

slope of two points shall be equal

$\frac{2-1}{1-x}$ = $\frac{y+1 - 2}{0-1}$

comparing numerator and denominator

1 = y-1 then y = 2

1 - x = -1 then x = 2

$\frac{1}{x} + \frac{1}{y} = \frac{1}{2} + \frac{1}{2} = 1$