Manner has 12 pies, archer ate 3 of them, how many pies does manner have left

nine pies

work: this question is pretty simple. manner has 12 pies, and three are being taken away. and since 12 - 3 = 9 he'll have 9 pies leftover.

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )

x = 3 ± √(5+y)