Question

find the equation of the line joining the points P(11,7)&Q(5,5) using determinants​

Answer 1

Step-by-step explanation:

To find eqn of time using determinants

eqn  =∣∣∣∣∣∣∣∣xx1x2yy1y2111∣∣∣∣∣∣∣∣=0

where (x1,y1)=(1,2)

(x2,y2)=(3,6) given

⇒ ∣∣∣∣∣∣∣∣x13y26111∣∣∣∣∣∣∣∣=0

⇒x(2−6)−y(1−3)+1(6−6)=0

⇒−4x+2y=0

⇒2y−4x=0