[" If "x>0" and "y<0," then the point "(x,-y)" lies in "],[" quadrant."]

[" 11."," If "AB=BA" and "A=[[1,1],[0,1]]],[" ,then "B=," b."[[x,0],[y,0]]," d."[[x,y],[0,x]]],[" c."[[x,y],[0,y]],[[x,x],[1,x]]]

Draw the graphs of x = 0 and y = 0

The asymptotes of the hyperbola x y=h x+k y are x-k=0 and y-h=0 x+h=0 and y+k=0 x-k=0 and y+h=0 x+k=0 and y-h=0

Solve for x and y : 0.4 x - 1.5 y = 6.5 , 0.3 x + 0.2 y = 0.9 .

Solve for x and y: 0.4x-1.5y=6.5, 0.3x+0.2y=0.9

cos (x+y) dy =dx , when x =0 and y =0

The asymptotes of the hyperbola xy=hx+ky are x-k=0 and y-h=0x+h=0 and y+k=0x-k=0 and y+h=0x+k=0 and y-h=0

If O Aa n dO B are equal perpendicular chords of the circles x^2+y^2-2x+4y=0 , then the equations of O Aa n dO B are, where O is the origin. 3x+y=0 and 3x-y=0 3x+y=0 and 3y-x=0 x+3y=0 and y-3x=0 x+y=0 and x-y=0