Questions on Algebra: Linear Equations, Graphs, Slope answered by real tutors!

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Question 23452: a2+13a+36=0
Click here to see answer by stanbon(57984)

Question 23500: i need help....choose a method to slove the linear system. ( the two equations are together)
8x+y=15
2x+2y=9
Click here to see answer by elima(1433)

Question 23500: i need help....choose a method to slove the linear system. ( the two equations are together)
8x+y=15
2x+2y=9
Click here to see answer by Paul(988)

Question 23513: Linear vs. nonlinear
can you help me
"x"-3,-2,-1,0,1,2,3,4
"y"10,5,2,1,2,5,_,_
I am trying to help my 7th grade daughter figure this out and I have no idea what the answer is
Click here to see answer by stanbon(57984)

Question 23530: find the slope and the y intercept of the line
y=5x-4
Click here to see answer by stanbon(57984)

Question 19511: Hi, I am stuck somewhere in here, can anybody point me back to the proper path? Thanks,
I am solving for a linear system with 3 variables
2x+3y-4z=4
x-6y+z=-16
-x+3z=8

I multiplied the first equation by 2 and got 4x+6y-8z=8
I then added this to the second and got a answer of 5x-7z=-8
I then multiplied the third equation by 5 and got z=4 but then I just petered out from here.... Any help would be great, Thanks sloozy
Click here to see answer by stanbon(57984)

Question 23770: I am not sure how to start this problem or how to finish it.
Solve using the addition and multiplication principles.
(6-3x)<=(1-2x)
Click here to see answer by stanbon(57984)

Question 23852: What is the Y intersect and slope of a graph that contains (4,-6) and (9,2)
Click here to see answer by ilana(307)

Question 23806: solve equation for the variable a.
3a-12b=15
Click here to see answer by elima(1433)

Question 23903: If I have (-5,0) and m=3, how do I find the equation of the line in y=mx+b form?
Click here to see answer by Paul(988)

Question 23906: What is the slope and y-intercept of 5y+4x=5
Click here to see answer by AnlytcPhil(1278)

Question 23912: 26-(16y+4)+(9y-x)
Click here to see answer by Alwayscheerful(414)

Question 23952: 3(x+5)=15
Click here to see answer by rapaljer(4667)

Question 23953: 2x-1
_______=7
2
Click here to see answer by elima(1433)

Question 23971: question 1
11(x+9)=121

Click here to see answer by elima(1433)

Question 23969: 4(x-3)=20

question 2
7(x-1)=49

Click here to see answer by elima(1433)

Question 24009: 396=z+256
Click here to see answer by JFM(1)

Question 24011: x-10=-4
Click here to see answer by yhtong(11)

Question 23977: 9x+2=20
Click here to see answer by yhtong(11)

Question 23979: 5x+1=36
Click here to see answer by yhtong(11)

Question 24036: how to graph this solution 2x +3y =6
Click here to see answer by rapaljer(4667)

Question 24035: how to graph this solutin 4x - y = 4
Click here to see answer by rapaljer(4667)

Question 24028: How do you graph this equation using three points:
-x +3y=8
Click here to see answer by venugopalramana(3286)

Question 24027: How do you graph(using a linear equations)this problem using three points:
x+2y=8
Click here to see answer by venugopalramana(3286)

Question 24010: 1 1/4 = 3/4
Click here to see answer by rapaljer(4667)

Question 24045: It has been 7 years since my last algebra class. The answer is 8 but I am not sure how to solve this problem can you please help me :
2/3(x+6)=1+ (4x-7)/3
I have tried common denominator of 6
4(x+6)= 1+2(4x-7)
4x+24=1+8x-14
4x+24=8x-13
stuck here
I tried 3 as common denominator also
3(x+6)= 1+3(4x-7)
3x+18 = 16x-28
-13x=-46
stuck here
Click here to see answer by rapaljer(4667)

Question 23975: 7x-1=6
Click here to see answer by askmemath(368)

Question 23974: 4(x+1)=5
Click here to see answer by askmemath(368)

Question 23973: 4(x-3)=24
Click here to see answer by askmemath(368)

Question 24012: y+2/3+7/9
Click here to see answer by longjonsilver(2297)

Question 23983: 5(2x-1)=x+5
Click here to see answer by longjonsilver(2297)

Question 23982: 5x
___=10
6
Click here to see answer by longjonsilver(2297)

Question 23980: 3(x-3)=4(x-2)
Click here to see answer by longjonsilver(2297)

Question 24053: I dont remember what the rules are for reducing a linear equation with this many parentheses in it, Can you help me with this one? Do you start with the inside first and then work your way out or do you work it just from left to right? I tried working from the inside out and came up with 9 instead of the correct answer which is 15... help :(
x-{3x-[2x-(8-x)+2]+3}-6=0
Click here to see answer by elima(1433)

Question 24076: Hi my name is Lindsey and i was wondering if u could explain to me how to graph linear inequalities in two variables? thank you so much!!
Click here to see answer by elima(1433)

Question 24111: describe the shape of the graph for y=3x-5
Click here to see answer by rapaljer(4667)

Question 24113: m=-1/2;b=5
Click here to see answer by rapaljer(4667)

Question 24160: I am stuck again. I am not sure how to simplify this one with the exponent in it
x(x-3)=x^2 - 2x+1-(5+x) Hi! ok the answer is that you have to distribute it!
Click here to see answer by Heretohelpya!(2)

Question 24159: I have tried to figure this out all night. Even some of my peers tried and none of us could do it. Can you please help me?
0.2(s+0.2)+0.5(s-0.4)=5.44 the answer is 8 solve for s
Click here to see answer by Heretohelpya!(2)

Question 24163: I am trying to convert this problem from decimals to whole numbers and solve it. But everytime I do I get this answer instead of 8
Equation 0.2(s+0.2)+0.5(s-0.4)=5.44
my work converting decimals to whole numbers (multiply by 100)
20s+400+50s-2000=544
70s-1600=544 (544+1600=2144)
70s=2144
s=30.628
The answer should be 8, what am I doing wrong here?
Click here to see answer by AnlytcPhil(1278)

Question 24207: We have tried this problem and can't get it - My mom can't figure it out either.
Please help
y-1 a-b
____ = ______
y+1 a+b solve for y
It tells me to cross multiply and I have gotten to this step
(y-1)(a+b)=(y+1)(a-b)
Do I now go to ya-1b = ya-1b - this is where I am lost please help
Click here to see answer by josmiceli(9819)

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