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anonymous
 one year ago
y = 8x − 9
y = 4x − 1
Part A: Explain how you will solve the pair of equations by substitution or elimination. Show all the steps and write the solution.
Part B: If the two equations are graphed, at what point will the lines representing the two equations intersect? Explain your answer.
anonymous
 one year ago
y = 8x − 9 y = 4x − 1 Part A: Explain how you will solve the pair of equations by substitution or elimination. Show all the steps and write the solution. Part B: If the two equations are graphed, at what point will the lines representing the two equations intersect? Explain your answer.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what is a variable that u can eliminate?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0X? I think. I'm completely lost

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0treat this as an equation

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0You can add or subtract to eliminate a letter (x or y).

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\frac{ y=8x9 } { y=4x1 }\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so can you see any thing that can be eliminated by subtraction or addition?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.091??? Sorry I didn't reply I got sidetracked

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0do u know wit a variable is?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm sorry I really need help I suck at math pls

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4For part B, we graph these two equations y=8x9 and y= 4x1 then the point of intersection is when there is a solution for both of these equations

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4For part A. substitution is a better choice.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so it becomes \[\frac{ 8x9 }{ 4x1 }\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Why would you say that I came on here for help because I care about my education not to be insulted by rude people like you.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4and how the heck can you solve with that?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4anyway set these two equations together 8x9 = 4x1 put all variables to the left and all numbers to the right 8x4x=1+9 now what's 8x4x and what's 1+9 ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Fine I don't want your help. You didn't hack me shut up.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4_ ughhhh @ganeshie8

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4@Icedragon50 stop creating drama on here. Just leave if you can't help nicely to other OS users.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you @usukidoll for actually helping me

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[8xy=9\]\[4xy=1\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0looking it this way might help

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4@saseal that works too elimination or substitution can give the same results.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.01+9=8 thanks so much

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4forgot one part though 8x4x=1+9 now what's 8x4x and what's 1+9 ? what's 8x4x ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yea its easier to put in matrix form that way :)

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4true, but most of the time , matrix form versions are taught way later o_O.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4@andrea0529 what's 8x4x ? or an easier way to put it by factoring the x x(84) what's 84 ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yea, once you go matrix you dont go back!

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4:) so now we have 4x = 8 we divide 4 from both sides so what's 8/4 ?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.48 divided by 4 @andrea0529 then we have x by itself after that step.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4dw:1438679720781:dw

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4yes so now that we have x = 2 , we can plug it into one of the equations to solve for y let's pick the second equation y=4x1 so we plug in x = 2 into y = 4x1 y=4(2)1 y=81 = ? what's 81 ?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4mhm so x = 2 and y = 7 we can plug these numbers back to the equation to see if they hold true. That means we have done this correctly

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.47=4(2)1 7=81 7=7 7=8(2)9 7=169 7=7

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4so we have done this correctly. Apparently at the point (2,7) the two lines should intersect

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4but it's asking for a graph so we need to make tables... _ we can let x = 0,1,2 to solve for y for y = 8x9 and y = 4x1

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4dw:1438680048402:dw so for this chart we plug in x= 0 for those 2 equations... similarly plug in x = 1 for those two equations as well until we hit the x = 2 which results in 7 for both equations

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4dw:1438680137485:dw so can you plug x = 0 for y = 8x9 y=4x1 and can you plug x = 1 for y=8x9 y=4x1 ??? since x = 2 is done already, I've wrote y = 7 on both of them.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4yeah what this guy wrote ^

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4because graphing manually is a pain. I think I overshot part b. oh well .

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4but (2,7) is a point that two lines cross (point of intersection) and there is one solution when we have perpendicular lines.

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.4@andrea0529 overshot part b. it was just asking the point of intersection with is (2,7) .

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay I get it know I mostly needed help with part a. I've got part b. Thank you so much.☺️
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