Question

By plotting the points and joining them, Show that the points (–1, –1), (2, 3) and (8, 11) are

collinear.
​

Answer 1

Step-by-step explanation:

Steps:

1 ) If Points P, Q and R are collinear, then they lie in a same line.

Slope of line PQ,

m(PQ) =

\frac{( 3 - ( - 1))}{(2 - ( - 1))} = \frac{4}{3}

(2−(−1))

(3−(−1))

=

3

4

Equation of line PQ, Slope form :

\begin{lgathered}(y - 3) = \frac{4}{3} (x - 2) \\ = > 3y - 4x - 1 = 0\end{lgathered}

(y−3)=

3

4

(x−2)

=>3y−4x−1=0

2) Point, R = (8,11) where x = 8,y = 11

Then,

\begin{lgathered}= > 3(11) - 4(8) - 1 \\ = > 33 - 32 - 1 = 0\end{lgathered}

=>3(11)−4(8)−1

=>33−32−1=0

Answer 2

Step-by-step explanation:

hope it helps you

YES I HAVE COPIED

I JUST WANTED POINTS:)