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

Answer 1

a) -4x - 9y = -19
-10y = -30

b)4x + 3y = 5
2y = -6

c) 7x - 3y = -11
9x = -6

d)12x - 3y = -33
14x = -28

Answer 2

y =4x + 11
put this equation in 2nd eq. and
solve for x
then use that value of x in first eq. to get the value of y
then put those values in the given equations to find the correct eq

Answer 3

how do i put it in the second equation

Answer 4

2x +3(4x +11) =5

Answer 5

x=-2

Answer 6

correct. now plug this value in first eq. to find y.

Answer 7

how do i do that

Answer 8

It seems he has abandoned you.

Answer 9

i see D:

Answer 10

what part do i plug it in

Answer 11

1st equation. 4x - y = -11
sorry net prob

Answer 12

would it be 2x-y=-11

Answer 13

4(-2) - y = -11
4(-2) + 11 = y

Answer 14

3=y

Answer 15

Correct. Now which eq in the given option will have this as a solution??

Answer 16

@Compassionate dear, its her not him. ;)

Answer 17

2y=6 would be y=3 becasue you would devide both sides by 2 to make the y alone right

Answer 18

you y = 3 not -3
so no its not second

Answer 19

oohhh

Answer 20

Sure??

Answer 21

its a

Answer 22

a) -4(-2) - 9(3) = 8 - 27 =-19
-10(3) = -30

b)4(-2) + 3(3) = -8 + 9 != 5
2(3) != -6

c) 7(-2) - 3(3) = -14 -9 =-23
9(3) = 27

d)12(-2) - 3(3) = -24 - 9 =-33
14(-2) = -28
its a and d

Answer 23

its both?

Answer 24

no because d would be 2 not 3

Answer 25

well negative 2

Answer 26

14 x = - 28
14(-2) = -28

Answer 27

so its a then..

Answer 28

yeah and also d
is it 14x or 14y in eq d

Answer 29

oh well thank you alot i am begining to get this topic now

Answer 30

anytime :)