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

@falseyy can you help?

Answer 2

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

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

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

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

Answer 3

I would suggest first solving the system of equations
4x - y = -11
2x + 3y = 5
for x and y...

Answer 4

yea thats what i'm doing now

Answer 5

okay, what have you got for x so far?

Answer 6

well for x (i think it's wrong) i got 6.3 repeating.

Answer 7

can you please just help me quickly I really need this answer!!!

Answer 8

@sweetburger can you please help?

Answer 9

hmm... here is what I did (I used substitution method)
4x - y = -11 --> y = 4x + 11
2x + 3y = 5
= 2x + 3(4x + 11) = 5 distribute
2x + 12x + 33 = 5 add like terms and subtract both sides by 33
14x = -28 <-- (shortcut: which option has that?)

Answer 10

thank you!!!!!!!! Can you help me on one other?

Answer 11

sure :)

Answer 12

Solve the system of equations by substitution. What is the solution for x?

2x + y = 1
4x + 2y = -1

Answer 13

thanks :)

Answer 14

x = 0

x = 2

There is no x value as there is no solution.

x can be any value as there is an infinite number of solutions.

Answer 15

2x + y = 1 --> y = -2x + 1
4x + 2y = -1
= 4x + 2(-2x + 1) = -1 distribute
4x - 4x + 2 = -1 add like terms
2 = -1
2 does not equal -1 therefore no solution

but be careful because if it was something like 2=2 then it would be infinite number of solutions

Answer 16

okay thanks soo much

Answer 17

glad I could help :)