Questions on Algebra: Systems of Linear Equations answered by real tutors!

Tutors Answer Your Questions about Linear-systems (FREE)

Question 331850: (0,7);9x+8y=3
i have no clue how to do this
Click here to see answer by Alan3354(69443)

Question 331849: 3x-6y=6

How do i find what
x-intercept is
and the i need y intercept
can any one help me

thanks
Click here to see answer by rfer(16322)

Question 331849: 3x-6y=6

How do i find what
x-intercept is
and the i need y intercept
can any one help me

thanks
Click here to see answer by checkley77(12844)

Question 331794: The perimeter of a rectangular is 26m. The length is 7m more than twice the width. Find the dimensions.
Click here to see answer by rfer(16322)

Question 332044: 2x+5y=9
4x-7y=-16
Click here to see answer by user_dude2008(1862)

Question 332066: I need help. Solve the system of equations.
4x-6y=-26
-2x+3y=13
x=?
Click here to see answer by jim_thompson5910(35256)

Question 332067: I need help. Find the equation of a line that is perpendicular to y=-x + 3 and passes through the point(-1, 2).
Click here to see answer by jim_thompson5910(35256)

Question 332232: Determine whether (-4,-7) is a solution of 2x+4y=16
Click here to see answer by Alan3354(69443)

Question 332285: I am really having a problem figuring out how I do this system of equations. The whole quesrion is: Solve the system of equatons by graphing. Then classify the system as conistentm inconsistent or independent.
What is the solution of the system of equations. (a) apoint (b) no solution (c) infinitly many solutions.
7x - 4y = 8
4y - 7x = -8
Click here to see answer by Alan3354(69443)

Question 332374: I would appreciate help for this problem! I have tried everything!!
To replace a set of brakes, an auto mechanic charges $60 for parts plus $40 per hour for labor.
The total cost, y, is given by the equation y = 40x + 60, where x is the number of hours of labor.
(a) Identify and (b) interpret the meaning of both the slope and the y-intercept.

Click here to see answer by Alan3354(69443)

Question 332408: a cubic packing box has dimensions of 1.2 feet on each side. What is the volume of the box?
Click here to see answer by rfer(16322)

Question 332375: Hello. Can you please help me with this problem?
I need to write these equations in standard form:
a. y= 3x -8
b. y= -x + 8
Standard form is Ax + By= C, correct?
Click here to see answer by rfer(16322)

Question 332612: I am having some trouble with this one.
Solve the system of equations. Let z be the parameter.
x+2y+3z=11
2x-y+z=2
Click here to see answer by Edwin McCravy(20056)

Question 332842: ok im not understanding this.
i thought i had it but the graphs throw me off. please help
Click here to see answer by checkley77(12844)

Question 333176: Solve each system by substitution:
5x+y=10
3x-3y=6

Click here to see answer by checkley77(12844)

Question 333306: The fudge factory sells their new fudge, fabulous fudge, for $6.90 per pound and their popular rocky road fudge for $4.30 per pound. How much of each type should be used to make a delicious duo sell for $9.00.
Click here to see answer by solver91311(24713)

Question 333457: (2x-3)/(4)-(x-5)/(6)=1
Click here to see answer by stanbon(75887)

Question 333521: POST A 50 WORD RESPONSE TO THE FOLLOWING; WHEN SOLVING A RATIONAL EQUATION, WHY IS IT NECESSARY TO PERFORM A CHECK
Click here to see answer by Edwin McCravy(20056)

Question 333566: Solve x^2 + 6x + 9 = 0

Click here to see answer by stanbon(75887)

Question 333679: rewrite the fraction so that the numerator and denominator have the same units. then solve.
simplify:7mins/400sec
Click here to see answer by jim_thompson5910(35256)

Question 333679: rewrite the fraction so that the numerator and denominator have the same units. then solve.
simplify:7mins/400sec
Click here to see answer by stanbon(75887)

Question 333703: What is the answer to the system of equation below?
2x+3z=2
3x+6y=6
x-2z=8
Click here to see answer by Edwin McCravy(20056)

Question 333692: y=2x 3x-4y=10 how would u use the substitution method with these two equations
Click here to see answer by solver91311(24713)

Question 333676: 4x-y-2=0 write in slope intercept form.and sketch the line
Click here to see answer by rfer(16322)

Question 333680: Find an equation for the line: through (-5,1) and perpendicular to y=3x-4.
m=-1/3 y=mx+b
1=-1/3(-5)+b
1=5/3+b
3/5=b
ANSWER: Y=-1/3X+3/5 Is this correct??
Click here to see answer by solver91311(24713)

Question 333952: 9(x+3)=4x-3
Click here to see answer by rfer(16322)

Question 333990: Solve this formula for the circumference of a circle
C=2pieR solve for r
Click here to see answer by stanbon(75887)

Question 334324: x+2/2-y+4/3=4
Click here to see answer by Alan3354(69443)

Question 334402: I'm not sure what category this problem falls under. In the problem 2x + 3y = 7 what is the expression for y in terms of x?
Click here to see answer by mananth(16946)

Question 334460: 2x+3y=1
4x-5y=-9
Click here to see answer by mananth(16946)

Question 334462: 2x+7y=8
5x-3y=21
por los tres metodos please
Click here to see answer by mananth(16946)

Question 334505: one canned juice drink is 15% orange juice, another is 5% orange juice. How many liters of each should be mixed together in order to get 10L that is 14% orange juice?
Click here to see answer by Alan3354(69443)

Question 334602: Please help me solve each system by graphing.
22. 3x -5y = -9
5x -6y = -8

24. 4x + 5y = -9
4y-x = 11

Please help me solve each system by substitution method. Determine whether the equations are independent, dependent, or inconsistent.
36. y = -3x + 19
y = 2x - 1
38. y = -4x-7
y = 3x
Click here to see answer by Alan3354(69443)

Question 334719: Please solve and graph the following system:
3x-5y = - 9
5x-6y = -8
Thank you!
Click here to see answer by mananth(16946)

Question 334731: Please help solve each system by substitution to determine whether the equations are independent, dependent, or inconsistent.

y = -3x + 19
y = x + 8
Click here to see answer by stanbon(75887)

Question 334789: in this system of equations, find x: 2x+3y=6 & 3x+3y=9
Click here to see answer by mananth(16946)

Question 334721: Please help with graphing the following systems:

4x +5y = -2
4y -x = 11

Thank you!
Click here to see answer by mananth(16946)

Question 334823: Please help solve by substitution method.

y = x + 4
3y -5x = 6
Click here to see answer by erikaii.19(2)

Question 334822: Please help solve this system by substitution method.

y = -4x - 7
y = 3x

Click here to see answer by janakisubramanian(2)

Question 334831: Hello.
I am currently working me way through a pre-course docket for a royal navy engineering course. I have a GCSE B maths grade (in 1999) and my use of maths has been fairly limited. However, I have been doing quite well in this docket, until now.
I have nipped forward to find the answer to this exerise that follows. I cannot work out how the answer was obtained; I also have no faith in this dockets authority as a number of terrible typos have beset me already.
The equation is thus:
5x+24=3x
That is exactly how it is printed in the docket. The answer, as printed, is apparently -12.
Please, could you explain to me, how this could be? I also know that with an unkown on both sides, it is customary to eliminate x from one side, however, this has still not lead to the answer of -12.
Could this be right? Or could it be the result of any number of typing errors?
Thanks for your time.
Craig Jenkins (panicking)
Click here to see answer by janakisubramanian(2)

Question 334825: This needs to be solved by substitution method to determine whether the equations are independent, dependent, or inconsistent. Thank you in advance for your assistance.

2x - y = 4
2x - y = 3
Click here to see answer by Fombitz(32388)

Question 334821: Please help me solve the following system by substitution method to determine whether the equations are independent, dependent, or inconsistent.

y = -3x + 19
y = 2x - 1
Click here to see answer by Fombitz(32388)

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