SOLUTION: 9. (4, -10), (1, -1) x y 1 x y 4 -10 1 4 -10 1 -1 1 1 -1 (x)(-10)(1)+(y)(1)(1)+(1)(4)(-1)+(1)(-10)(1)-(-1)(1)(x)-(1)(4)(y)= -10x+y+(-4)-(-10)-(-x)-4y=

Question 162554: 9. (4, -10), (1, -1)
x y 1 x y
4 -10 1 4 -10
1 -1 1 1 -1
(x)(-10)(1)+(y)(1)(1)+(1)(4)(-1)+(1)(-10)(1)-(-1)(1)(x)-(1)(4)(y)=
-10x+y+(-4)-(-10)-(-x)-4y=
-9x-3y+6=0
-9x-3y=-6
-3y+(-9x)=-6
-3y=-6+9x
-y=2+3x
Y=-3x-2
Can you find my sign error? Im sure im just overlooking something,but I can't find it. Thank you so much!
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
(x)(-10)(1)+(y)(1)(1)+(1)(4)(-1)+(1)(-10)(1)-(-1)(1)(x)-(1)(4)(y)=
IF this step is correct then:
-10x+y-4[-10]+1x-4y
*******(+10)***** is your mistake.

RELATED QUESTIONS
Question 162554: 9. (4, -10), (1, -1) x y 1 x y 4 -10 1 4 -10 1 -1 1 1 -1... (answered by checkley77)

1. 4x+3y=1, x=1-y 2. 2x-y=6, -x+y=-1 3. 6x-y=3, 4x-2y=-2 4. 2x+3y=7, x=1-4y 5.... (answered by AnlytcPhil)

10(y-1)=y+4 (answered by jim_thompson5910)

(1)5x-y=5 (2) x+3y=6 (3) graph y=3x (4) graph (-7, -4) and (-1,... (answered by elima)

{{{4^(x+1) + 4^(x-1) =... (answered by josgarithmetic)

10^1-x=10^4 (answered by Alan3354)

solve with substitutions: -2 x + 1 y = 10 .............1 1 y = -6 -2 x ---------2 (answered by mananth)

y= x - 6 y= 2x - 8 y= x - 4 y= -2x + 5 y= 2x+8 y=8 x=y= -3 x - y = -1... (answered by Alan3354)

solve the following systems using comparison method in algebraic method. 1. 1/x+1/y=0,... (answered by solver91311)