Question

Choose the equivalent system of linear equations that will produce the same solution as the one given below.

4x − y = −11
2x + 3y = 5
−4x − 9y = −21
−10y = −30
4x + 3y = 5
2y = −6
7x − 3y = −11
9x = −6
12x − 3y = −33
14x = −28

Answer 1

a)3(4x-y=-11)=>12x-3y=-33
   2x-3y=5
  12x-3y=-33
14x=-28
x=-2 then substitute back to equation and 4-3y=5 and y=3
a)(-2,3)
b)y=3 and substitute 3 in equation for y so -4x-27=-21 and x=-3/2
(-3/2,3)
c) y=-3 and substitute it back to equation so there for the 4x-3(3)=5 andx=7/2
(7/2,-3)
d)(-2/3,19/9)
e)(-2,3)
so a and e are the same equations.
Hopes this loves.

Answer 2

Answer:

Step-by-step explanation:

a)3(4x-y=-11)=>12x-3y=-33

  2x-3y=5

 12x-3y=-33

14x=-28

x=-2 then substitute back to equation and 4-3y=5 and y=3

a)(-2,3)

b)y=3 and substitute 3 in equation for y so -4x-27=-21 and x=-3/2

(-3/2,3)

c) y=-3 and substitute it back to equation so there for the 4x-3(3)=5 andx=7/2

(7/2,-3)

d)(-2/3,19/9)

e)(-2,3)

so a and e are the same equations.

Hope this helps

:)