Question

a) y =3x2-x+1
v) y =6x2-2x+9
c) y =10x2-5x+7
d) y=8x2+8x-11

Answer 1

a)y=6+1-x

  y=7-x

  x+y=7

b)y =6x2-2x+9

  y=12-2x+9

  y=21-2x

  2x+y=21

c) y =10x2-5x+7

  y=27-5x

  5x+y=27

d)y=8x2+8x-11

   y=5+8x

    -8x+y=5