Question

i need help solving this system by graphing??..

Answer 1

\[\left\{ 2x+y=-7 \right\} \]

Answer 2

y=2x-7

Answer 3

\[\left\{ -3x+2y=14 \right\}\]

Answer 4

{−3x+2y=14}
-2y -2y
-3x=12
/-3 /-3
x=-4

Answer 5

\[\{\begin{matrix}2x + y = -7 \\ -3x+2y = 14\end{matrix}\}\]

Answer 6

ok i got through the first step

Answer 7

To solve by graphing, rewrite them in the standard y=mx + b form and graph each one. Then find where they cross.

Answer 8

wait, im confused??

Answer 9

2x+y=−7} in y=mx+b for its like this y=2x-7

Answer 10

i plug in the other equation into y=mx+b

Answer 11

If you are asked to solve by graphing you have to write the equations in standard form and graph them.

Answer 12

yess

Answer 13

yes

Answer 14

so now i jst do this

Answer 15

y=2(-4)-7

Answer 16

y=-8-7

Answer 17

\[2x + y = -7 \implies y = -2x + -7\]
So draw that line on some graph paper.

\[-3x+ 2y = 14 \implies y = \frac{3}{2}x + 7\]

Answer 18

???

Answer 19

You don't do any algebra when you solve by graphing.

Answer 20

then hyou make a table of values then you get your coordinates and graph them on the graph and when it makes a straight line you draw it throughth and make sure you xtende the line

Answer 21

(Other than the algebra to get the equation into standard form)

Answer 22

wait so how do i get the corrdinates?

Answer 23

by using numbers for x and psubititing it to the equation and you get you x and y then you graph them

Answer 24

yes i already have some graphed because i have a multiple choice.

Answer 25

ok

Answer 26

if you needl help ask me

Answer 27

yes i do

Answer 28

ok

Answer 29

i dnt noe how to get the y value?

Answer 30

ok what is your first eqution

Answer 31

do i jst plug it into the equation

Answer 32

whats the equation

Answer 33

2x+y=-7

Answer 34

Just plot 2 points and draw a straight line that goes through each of them.

Answer 35

Set x=0 for the first point and figure out what y is. Then set y = 0 for the second point and find what x is.

Answer 36

polpak i tryed that its doesnt help

Answer 37

either way i dnt need to graph them they r alrdy graphed

Answer 38

ok good

Answer 39

Oh, then just check to see which ones go through the points you plot.

Answer 40

ok i will check.

Answer 41

but do you get how to get x an y

Answer 42

no i dnt

Answer 43

yoplak you mean at which oints do they intersect

Answer 44

i tried to check on the graph and didnt understand

Answer 45

so ok diid you changed the equation they give you to y=mx+b form

Answer 46

yes

Answer 47

y=2x-7

Answer 48

what are the equations that you changed

Answer 49

the top one which is 2x+y=-7

Answer 50

ok

Answer 51

so do i jst plug in the x value that i got

Answer 52

which was -4?

Answer 53

can you attach this work and give me the linnk

Answer 54

how?

Answer 55

what numbers diid you use for x

Answer 56

ask one of your parents

Answer 57

ohh the choices u mean??

Answer 58

ok

Answer 59

a.(-4,-1) b.(-4,1) c.(4,1) d.(4,-1)

Answer 60

i think its either a or b.

Answer 61

wht is the questiom

Answer 62

solve the system by graphing

Answer 63

ok diid you grpah the equatios

Answer 64

noo they r alrdy graphed they r the choices too withthe x and y values

Answer 65

what doe the graph show does it show 2 lines crossing each other

Answer 66

yes

Answer 67

at what point do they intersect

Answer 68

in other words cross at which 2 points

Answer 69

which one??

Answer 70

a is 0 n 6 i think

Answer 71

both of the lines

Answer 72

how do i knoe they r like in the middle of 2 #s?

Answer 73

can you make an attachmen t to this work so i can see this

Answer 74

ask your mom or dad

Answer 75

so i can help you better and faster

Answer 76

i wuld have to scan it to the comp.

Answer 77

yes

Answer 78

ill see wait a lil

Answer 79

ok

Answer 80

u there

Answer 81

yes

Answer 82

diid you scan it

Answer 83

im doing it rite now

Answer 84

ok

Answer 85

what grade you in

Answer 86

8th and u??

Answer 87

me too

Answer 88

ohh

Answer 89

am good at math i diid this already

Answer 90

i knew it your were in 8th

Answer 91

ohh im not so good

Answer 92

are you finsih scaning

Answer 93

ok its saving

Answer 94

ok give me the link

Answer 95

i cant find it

Answer 96

wait a lil plz

Answer 97

ok

Answer 98

ohh it look all weird