Question

Which is a solution to the equation 5x + 2y = –1?

A.
(–2, 5)

B.
(1, –3)

C.
(2, –4)

D.
(–1, 4)

Answer 1

Hold on

Answer 2

K

Answer 3

Ordered pairs are in the form of (x, y).

For A, x=2 and -4=y

Insert the numbers where its respective variable is.

5(2) + 2(-4) = -1

Then, solve using Order of Operations.

5 * 2 + 2 * -4 = -1
10 + 2 * -4 = -1
10 + -8 = -1
10 - 8 = -1
2 = -1

Answer 4

Thanks!

Answer 5

Plug in those values for x and y, see if it gives you a true statement,

5x + 2y = –1

Using A, (-2,5)

5(-2) + 2(5) = -1

-10 + 10 = -1

-10 + 10 = 0

0 = 1 <-- therefore this isn't a true statement.

Answer 6

It is B

Answer 7

equation of the line=
5x+2y=1
the equation is of the form ax+by+c=0 then
the slope of the line= -(x coefficient)/(y coefficient)
step1:1st we convert given line in to ax+by+c=0 for this we subtract 1 on both sides

5x+2y-1=1-1
5x+2y-1=0
now the equation is of the form ax+by+c=0
slope= -(x coefficient)/(y coefficient)
here x coefficient=5,y coefficient=2
slope= -(5)/2

Answer 8

its A

Answer 9

Why are you people copying and pasting from google??

http://answers.yahoo.com/question/index?qid=20120202130352AAXGnaw
http://www.algebra.com/algebra/homework/Linear-equations/Linear-equations.faq.question.274752.html

Answer 10

Phantom, if it's B, then why didn't you put x=1 and y=-3?

Answer 11

Why cant i?

Answer 12

they needed helped so i helped

Answer 13

Its neither A... and because you're taking credit for something that's not yours..

Answer 14

That typo, not*

Answer 15

did i say it was mine? no.

Answer 16

The way Phantom said it the first time, it should be C.

Answer 17

im not taking credit because i am it on my homework or anything

Answer 18

If its C,

Then, use (2, –4)

5(2) + 2(-4) = –1

10 + (- 8) = -1

10 - 8 = 2

2 = -1 <-- not true

Answer 19

Nvm, case closed. XD

Answer 20

xD lol

Answer 21

It's B.

Answer 22

ok then the internet was wrong. so i taking taking credit for something that wasnt right? w.e bye

Answer 23

Bye

Answer 24

Yea

Answer 25

I'm closing the question now.

Answer 26

ok bye