Question

Please find it freind. Pleeeeeeeeeerse.

Answer 1

Answer :

p = 2 , q = -3

Explanation:

It is given that,

(3,-1) and (6,1) points lie on

the line px+qy=9 .

i) Substitute (3,-1) in given

equation,

p×3 +q×(-1)=9

=> 3p-q=9 -------( 1 )

ii) substitute (6,1) in the equation,

p×6+q×1=9

=> 6p+q=9 -----( 2 )

Add equations (1) and (2) ,

we get

9p = 18

=> p = 18/9

=> p = 2

put p = 2 in equation (1),we

get

=> 3×2 - q = 9

=> 6 - q = 9

=> -q = 9 - 6

=> -q = 3

=> q = -3

Therefore,

p = 2 , q = -3

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