Question

( 3 x+4 y=25 )
( n=frac{25-49}{3} )
( m^{2}+y^{2}=25 )
( left(frac{25-4 y}{3}right)^{2}+y^{2}=25 )
( frac{625+16 y^{2}-200 y}{9}+y^{2}=25 )
( 625+16 y^{2}-200 y+9 y^{2}=225 )
( 25 y^{2}-200 y+400=0 )
( y^{2}-8 y+16=0 )
( y^{2}-8 y-4 quad y=8 pm sqrt{6-4(1) / 6} )
( y=frac{8}{2}=4 )
( y=4 )
( 3 x+4(4)=25 )
( 4=3 )
( (x, y)=(3, y) )

# 15. Line 3x + 4y = 25 touches the circle x² + y = 25 at the point- (A) (4,3) (B) (3, 4) (C)(-3,-4) (D) None of these 16. The equations of the tangents drawn from the point (0.1) to the circle x + y - 2x + 4y = 0 are - |_nyt 2-2 = 0

Solution