Question

Question.6 of short answers...

Answer 1

Answer:

x + 3y = 7

Step-by-step explanation:

Here its given that,

(x, y) , (1, 2) and (7, 0) are collinear points.

Hence  slope of any two points must be same.

⇒  $\frac{y-2}{x-1} = \frac{0-2}{7-1}$

⇒   $\frac{y-2}{x-1} = \frac{-2}{6}$ $= \frac{-1}{3}$  

⇒ 3(y - 2) = - (x - 1)  ( cross multiplication)

⇒ 3y - 6 = -x + 1

⇒ x + 3y = 7

Thus , for given points to be collinear, x and y must be related as:

x + 3y = 7

Answer 2

Step-by-step explanation:

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