The point to which the origin should be shifted so that the equation y 2 - 6 y - 4 x + 13 = 0 will not…

The point to which the origin should be shifted so that the equation y2-6y-4x+13=0 will not contain any term in y and the constant term, is
  1. 1, 1
  2. 1, 2
  3. 2, 1
  4. 1, 3

Solution

Given equation, y2-6y-4x+13=0

Now origin is shifted to (h,k)

yy+k 2xx+h

k(y+k)2-6(y+k)-4(x+h)+13=0

y2+k2+2ky-6y-6k-4x-4h+13=0

y2 will not contain any term

y2+2k-6y=0 & k2-6k-4h+13=0

y(y+2k-6)=0            (3)2-6(3)-4h+13=0y=0 /y+2k-6=0     9-18-4h+13=02k=6                               -4h+4=0k=3                                 -4h=-4                                             h=1

Origin shifted to (h,k)(1,3).

 

Asked in: AP EAMCET 2020 (23 Sep Shift 1)

Practice more Straight Lines questions on Aicharya