SOLUTION: What is the equations by graphing on these questions: 1. y=-2x+1y=x-5 2. y+1/2x-3y=3/2x-1 3. y=2xx+y=3 4. x+y=o3x+y=-4 5. x=3-3yx+3y=-6 6. x+2y=-44y=3x+12 7. y=-2 2x-5=20 9

Algebra ->  Graphs -> SOLUTION: What is the equations by graphing on these questions: 1. y=-2x+1y=x-5 2. y+1/2x-3y=3/2x-1 3. y=2xx+y=3 4. x+y=o3x+y=-4 5. x=3-3yx+3y=-6 6. x+2y=-44y=3x+12 7. y=-2 2x-5=20 9      Log On


   

Question 1137135: What is the equations by graphing on these questions:
1. y=-2x+1y=x-5
2. y+1/2x-3y=3/2x-1
3. y=2xx+y=3
4. x+y=o3x+y=-4
5. x=3-3yx+3y=-6
6. x+2y=-44y=3x+12
7. y=-2 2x-5=20
9. 4x+3y=-15y=x+2
If you can help be with the answers today asap it would greatly appreciated

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

1.
y=-2x%2B1
y=x-5
---------------------------rewrite in standard form
2x%2By=1
-x%2By=-5
Solved by pluggable solver: Solve the System of Equations by Graphing



Start with the given system of equations:


2x%2By=1

-x%2By=-5





In order to graph these equations, we need to solve for y for each equation.




So let's solve for y on the first equation


2x%2By=1 Start with the given equation



1y=1-2x Subtract 2+x from both sides



1y=-2x%2B1 Rearrange the equation



y=%28-2x%2B1%29%2F%281%29 Divide both sides by 1



y=%28-2%2F1%29x%2B%281%29%2F%281%29 Break up the fraction



y=-2x%2B1 Reduce



Now lets graph y=-2x%2B1 (note: if you need help with graphing, check out this solver)



+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+-2x%2B1%29+ Graph of y=-2x%2B1




So let's solve for y on the second equation


-x%2By=-5 Start with the given equation



1y=-5%2Bx Add +x to both sides



1y=%2Bx-5 Rearrange the equation



y=%28%2Bx-5%29%2F%281%29 Divide both sides by 1



y=%28%2B1%2F1%29x%2B%28-5%29%2F%281%29 Break up the fraction



y=x-5 Reduce





Now lets add the graph of y=x-5 to our first plot to get:


+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+-2x%2B1%2Cx-5%29+ Graph of y=-2x%2B1(red) and y=x-5(green)


From the graph, we can see that the two lines intersect at the point (2,-3) (note: you might have to adjust the window to see the intersection)




2.
y+1/2x-3y=3/2x-1???????

3.
y=2x
x%2By=3
-----------
-2x%2By=0
x%2By=3
Solved by pluggable solver: Solve the System of Equations by Graphing



Start with the given system of equations:


-2x%2By=0

1x%2By=3





In order to graph these equations, we need to solve for y for each equation.




So let's solve for y on the first equation


-2x%2By=0 Start with the given equation



1y=0%2B2x Add 2+x to both sides



1y=%2B2x%2B0 Rearrange the equation



y=%28%2B2x%2B0%29%2F%281%29 Divide both sides by 1



y=%28%2B2%2F1%29x%2B%280%29%2F%281%29 Break up the fraction



y=2x%2B0 Reduce



Now lets graph y=2x%2B0 (note: if you need help with graphing, check out this solver)



+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+2x%2B0%29+ Graph of y=2x%2B0




So let's solve for y on the second equation


1x%2By=3 Start with the given equation



1y=3-x Subtract +x from both sides



1y=-x%2B3 Rearrange the equation



y=%28-x%2B3%29%2F%281%29 Divide both sides by 1



y=%28-1%2F1%29x%2B%283%29%2F%281%29 Break up the fraction



y=-x%2B3 Reduce





Now lets add the graph of y=-x%2B3 to our first plot to get:


+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+2x%2B0%2C-x%2B3%29+ Graph of y=2x%2B0(red) and y=-x%2B3(green)


From the graph, we can see that the two lines intersect at the point (1,2) (note: you might have to adjust the window to see the intersection)




4.
+x%2By=0
3x%2By=-4
------------------
Solved by pluggable solver: Solve the System of Equations by Graphing



Start with the given system of equations:


1x%2By=0

3x%2By=-4





In order to graph these equations, we need to solve for y for each equation.




So let's solve for y on the first equation


1x%2By=0 Start with the given equation



1y=0-x Subtract +x from both sides



1y=-x%2B0 Rearrange the equation



y=%28-x%2B0%29%2F%281%29 Divide both sides by 1



y=%28-1%2F1%29x%2B%280%29%2F%281%29 Break up the fraction



y=-x%2B0 Reduce



Now lets graph y=-x%2B0 (note: if you need help with graphing, check out this solver)



+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+-x%2B0%29+ Graph of y=-x%2B0




So let's solve for y on the second equation


3x%2By=-4 Start with the given equation



1y=-4-3x Subtract 3+x from both sides



1y=-3x-4 Rearrange the equation



y=%28-3x-4%29%2F%281%29 Divide both sides by 1



y=%28-3%2F1%29x%2B%28-4%29%2F%281%29 Break up the fraction



y=-3x-4 Reduce





Now lets add the graph of y=-3x-4 to our first plot to get:


+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+-x%2B0%2C-3x-4%29+ Graph of y=-x%2B0(red) and y=-3x-4(green)


From the graph, we can see that the two lines intersect at the point (-2,2) (note: you might have to adjust the window to see the intersection)



5.
x=3-3y
x%2B3y=-6
---------------------
x%2B3y=3
x%2B3y=-6
Solved by pluggable solver: Solve the System of Equations by Graphing



Start with the given system of equations:


1x%2B3y=3

1x%2B3y=-6





In order to graph these equations, we need to solve for y for each equation.




So let's solve for y on the first equation


1x%2B3y=3 Start with the given equation



3y=3-x Subtract +x from both sides



3y=-x%2B3 Rearrange the equation



y=%28-x%2B3%29%2F%283%29 Divide both sides by 3



y=%28-1%2F3%29x%2B%283%29%2F%283%29 Break up the fraction



y=%28-1%2F3%29x%2B1 Reduce



Now lets graph y=%28-1%2F3%29x%2B1 (note: if you need help with graphing, check out this solver)



+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+%28-1%2F3%29x%2B1%29+ Graph of y=%28-1%2F3%29x%2B1




So let's solve for y on the second equation


1x%2B3y=-6 Start with the given equation



3y=-6-x Subtract +x from both sides



3y=-x-6 Rearrange the equation



y=%28-x-6%29%2F%283%29 Divide both sides by 3



y=%28-1%2F3%29x%2B%28-6%29%2F%283%29 Break up the fraction



y=%28-1%2F3%29x-2 Reduce





Now lets add the graph of y=%28-1%2F3%29x-2 to our first plot to get:


+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+%28-1%2F3%29x%2B1%2C%28-1%2F3%29x-2%29+ Graph of y=%28-1%2F3%29x%2B1(red) and y=%28-1%2F3%29x-2(green)


From the graph, we can see that the two lines are parallel and will never intersect. So there are no solutions and the system is inconsistent.



6.
x%2B2y=-4
4y=3x%2B12
-------------------
x%2B2y=-4
-3x%2B4y=12

Solved by pluggable solver: Solve the System of Equations by Graphing



Start with the given system of equations:


1x%2B2y=-4

-3x%2B4y=12





In order to graph these equations, we need to solve for y for each equation.




So let's solve for y on the first equation


1x%2B2y=-4 Start with the given equation



2y=-4-x Subtract +x from both sides



2y=-x-4 Rearrange the equation



y=%28-x-4%29%2F%282%29 Divide both sides by 2



y=%28-1%2F2%29x%2B%28-4%29%2F%282%29 Break up the fraction



y=%28-1%2F2%29x-2 Reduce



Now lets graph y=%28-1%2F2%29x-2 (note: if you need help with graphing, check out this solver)



+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+%28-1%2F2%29x-2%29+ Graph of y=%28-1%2F2%29x-2




So let's solve for y on the second equation


-3x%2B4y=12 Start with the given equation



4y=12%2B3x Add 3+x to both sides



4y=%2B3x%2B12 Rearrange the equation



y=%28%2B3x%2B12%29%2F%284%29 Divide both sides by 4



y=%28%2B3%2F4%29x%2B%2812%29%2F%284%29 Break up the fraction



y=%283%2F4%29x%2B3 Reduce





Now lets add the graph of y=%283%2F4%29x%2B3 to our first plot to get:


+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+%28-1%2F2%29x-2%2C%283%2F4%29x%2B3%29+ Graph of y=%28-1%2F2%29x-2(red) and y=%283%2F4%29x%2B3(green)


From the graph, we can see that the two lines intersect at the point (-4,0) (note: you might have to adjust the window to see the intersection)




7.
y=-2+
2x-5=20
---------------
y=-2+
2x=25
----------------
y=-2+->horizontal line
x=12.5->vertical line


intersection point: (12.5,-2)

9.
4x%2B3y=-15
y=x%2B2
------------------
4x%2B3y=-15
-x%2By=2

Solved by pluggable solver: Solve the System of Equations by Graphing



Start with the given system of equations:


4x%2B3y=-15

-x%2By=2





In order to graph these equations, we need to solve for y for each equation.




So let's solve for y on the first equation


4x%2B3y=-15 Start with the given equation



3y=-15-4x Subtract 4+x from both sides



3y=-4x-15 Rearrange the equation



y=%28-4x-15%29%2F%283%29 Divide both sides by 3



y=%28-4%2F3%29x%2B%28-15%29%2F%283%29 Break up the fraction



y=%28-4%2F3%29x-5 Reduce



Now lets graph y=%28-4%2F3%29x-5 (note: if you need help with graphing, check out this solver)



+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+%28-4%2F3%29x-5%29+ Graph of y=%28-4%2F3%29x-5




So let's solve for y on the second equation


-x%2By=2 Start with the given equation



1y=2%2Bx Add +x to both sides



1y=%2Bx%2B2 Rearrange the equation



y=%28%2Bx%2B2%29%2F%281%29 Divide both sides by 1



y=%28%2B1%2F1%29x%2B%282%29%2F%281%29 Break up the fraction



y=x%2B2 Reduce





Now lets add the graph of y=x%2B2 to our first plot to get:


+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+%28-4%2F3%29x-5%2Cx%2B2%29+ Graph of y=%28-4%2F3%29x-5(red) and y=x%2B2(green)


From the graph, we can see that the two lines intersect at the point (-3,-1) (note: you might have to adjust the window to see the intersection)