Question

What is the solution to the system of equations?

y = 2x – 3.5

x – 2y = –14

(–7, 3.5)
(3.5, –7)
(7, 10.5)
(10.5, 7)

Answer 1

its hard to know when you cant go to school fo the rest of the year

Answer 2

You're trying to find X and Y, right?

Answer 3

mhm

Answer 4

this one is different bc we have x= and y=. you can do either one but either plug y=2x-3.5 into the y variable of the second equation or plug x-2y=-14 into the x variable of the first equation.

Answer 5

oop i read it wrong sorry

Answer 6

Ramen, it's x-2y=14, x= nothing, yet.

Answer 7

ik. anyway you can plug y=2x-3.5 into the y variable of the other equation: x-2(2x-3.5)=-14. with this, we have to use distribution

Answer 8

Plug equation #1 into the second equation and solve for x

Answer 9

y = 2x - 3.5
x - 2 y = -14

Plug the first equation into the second equation like so;
x - 2 ( 2x - 3.5 ) = -14
Distribute -2 to 2x and -3.5

Your equation should now look like this:

x - 4x + 7 = -14
You want common numbers to be in the same side so you subtract 7 from both sides

x - 4x + 7 - 7 = -7 - 14

Now simplify both sides

x - 4x = -3x
- 7 - 14 = -21

In order to solve for x you need to get x by itself, so you divide both sides by -3

-3x / -3 = x
-21 / -3 = 7
x = 7

In order to solve for y you need to plug x in

Answer 10

You can plug it into either equation

Answer 11

nice work and showing steps, but next time avoid giving the direct answer of X.

Answer 12

Okay

Answer 13

c

Answer 14

What do you get for Y payton?

Answer 15

yes it is and y is 10.5 so my answer was c

Answer 16

its okay

Answer 17

yes C is correct.

Answer 18

because -14=-14 when you plug 7 in replacement of x

Answer 19

thank you TSO,ramen, and QuestionCoveBot!!!

Answer 20

my pleasure :)

Answer 21

np

Answer 22

yw