Question

[6.01] Select the system of equations that corresponds to the given graph.

Answer 1

-2x - y = 4
2x + y = -2
-8x + 4y = -16
-4x + 2y = -8
x + 2y = 4
2x - 4y = 8
2x + 3y = 6
3x + 2y = 4

Answer 2

???

Answer 3

from this graph you get that when x=4 y=0
and when x=0 y=-2 and when x=0 y=2

Answer 4

now you need check these roots to what equations coresponde,are right

ok ?

Answer 5

-2x - y = 4
2x + y = -2
-8x + 4y = -16
-4x + 2y = -8
x + 2y = 4
2x - 4y = 8
2x + 3y = 6
3x + 2y = 4

i can choose from these

Answer 6

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

-8x + 4y = -16
-4x + 2y = -8

x + 2y = 4
2x - 4y = 8

or

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

Answer 7

yes from these you need to chose it

Answer 8

is it the 1st one?

Answer 9

are you sure ?

Answer 10

when y=0 rsulte x=4

Answer 11

1. will be x+2y=4

Answer 12

because here you see if you check it that for y=0 result x=4

yes ?

Answer 13

yes

Answer 14

you need getting again two

ok ?

Answer 15

for x=0 y=2
and for x=0 y=-2

Answer 16

ok...?

Answer 17

the second one will be for y= -2

Answer 18

and for y=2 can you get it ?

Answer 19

x+2y=4

Answer 20

so and with this you have got all

ok ?

Answer 21

do you understand it why are these equations right for these points ?

Answer 22

yes but i dont get which choice is right

Answer 23

so from this graph you see there that for these intersection points of thses lines with axe x and y there are these points of intersection for x you see 4 and for y 2 and -2

yes ?

Answer 24

so after this you just need to get these equations for what has like roots these points of intersection 2,-2 and 4

Answer 25

ok ?

Answer 26

ok

Answer 27

so than good luck

bye

Answer 28

you can just solve both of the line equations
y= mx + b

Answer 29

use the points (0,2) and (4,0)
and (4,0) and (0,-2)
so for the first
y=mx+b you get
y = (rise/run) x + b
y= ((0-2)/(4-0))x+b
y=-1/2x+b
now substitute the point ( 4,0) and get the b
(0)=-1/2(4)+b)
b = 2
so first equation is y = -2x + 2 or y+1/2x=2 or 2y+x=4
you can similarly solve for the 2nd equation and get y= 1/2(x) - 2 or 2y-x=-4 or -4y+2x=8 if u multiply by -2

Answer 30

when i mean or thats just multiplying both sides of the equation by a constant so theyre all equal

Answer 31

i hope that makes sense