Question

Line Q is represented by the following equation: 2x + y = 11

Which equation completes the system that is satisfied by the solution (3, 5)?
A. x + 2y = 15
B. x + y = 15
C. x + y = 8
D. x − y = 2

Answer 1

@ayeshaafzal221

Answer 2

would it be C?

Answer 3

hw did u come up with this answer?

Answer 4

did u solve each eq simultaneously, because when u do when u get x or y value same as (3,5) that equation will be ur answer

Answer 5

btw ur answer is right

Answer 6

I get how to substitute the numbers but i dont fully understand how to answer the question. Am i simplifying?

Answer 7

no its a very long question basically u solve each eq simultaneously with original eq "2x+y=11"

Answer 8

it would end up being 2x3 + 5 = 11 so how to the answer choices come up?

Answer 9

2x+y=11
x+y=8

2x+y=11
-2(x+y=8)

2x+y=11
-2x-2y=-16

-y=-5
y=5

Answer 10

like this ^

Answer 11

but if u want shorter way u can sub ur value ur right

Answer 12

ah, well thanks.