Question

PLZ ANSWER ITZ URGENT ONLY DO THE 1ST ONE FOR 15 POINTS.​

Answer 1

Answer:

x is 1 and y is -2

Step-by-step explanation:

multiplying 2nd equation by 2

we get

2x-10y=22 , eq.3

subtract eq 1 from eq 3

(2x-10y =22)

-(2x+3y=-4)

we get

-13y = 26

so y=-2

putting y =-2 in 2nd equation

x-5(-2) =11

x+10 =11

x=1

Answer 2

Answer:

Answer

Given the equation of line 2x+3y−5=0

Let A(8,9) and B(2,1) be the points

Let the point of division be of the form K:1 = m:n

Nowx=

m+n

mx

2

+nx

1

=

K+1

K×2+1×8

y=

K+1

my

2

+ny

1

=

K+1

K×1+1×9

⇒(x,y)=(

K+1

2K+8

,

K+1

K+9

)

Substitute (x,y) in the equation

2(

K+1

2K+8

)+3(

K+1

K+9

)−5=0

⇒2(2K+8)+3(K+9)=5(K+1)

⇒4K+16+3K+27=5K+5

⇒2K+38=0∴K=−19

∴ K:1=−19:1=m:n