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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 544611: 4x+4=6x so what is x?
Click here to see answer by friesr(113)

Question 544768: Solve the system of
equations by graphing
x+y=8
x-y=6
where do I start?
Click here to see answer by lwsshak3(6505)

Question 545085: Use substitution to solve the system
y=2x-11
3x+2y=13
Click here to see answer by saifoo.khan(162)

Question 545088: Use substitution to solve the system
8x-9y=-1
-6x+5y=-1
Click here to see answer by saifoo.khan(162)

Question 545158: Solve by substitution method.
-10x+8y=-6
y=5/4x
I need help refreshing for final.
Click here to see answer by jim_thompson5910(28595)

Question 545358: x-3y=2
3x-4y=-4
Cant solve this using substitution method.
any help would be appreciated
thanks
Click here to see answer by jim_thompson5910(28595)

Question 545545: Please help me solve this equation.
52=4(8+5n)

Thank You.
Click here to see answer by jim_thompson5910(28595)

Question 545650: 2x-y = -4 -3x+y=-9
Click here to see answer by saifoo.khan(162)

Question 545652: which graph best represents y=1/2x+2
Click here to see answer by mananth(12270)

Question 545670: which graph best represents the equation of a line with a slope of -4 and a y-intercept of 3?
Click here to see answer by saifoo.khan(162)

Question 545681: Which equation best decribes a line parallel to the graph of y=3/2x-3?
Click here to see answer by Alan3354(30993)

Question 545683: how do you solve
x+y=-10
x=y+6
Click here to see answer by saifoo.khan(162)

Question 545683: how do you solve
x+y=-10
x=y+6
Click here to see answer by stanbon(57347)

Question 545683: how do you solve
x+y=-10
x=y+6
Click here to see answer by MathTherapy(1424)

Question 545686: what is the solution of 2(x-3)=3x-11
Click here to see answer by jim_thompson5910(28595)

Question 545833:

Click here to see answer by stanbon(57347)

Question 545835:
Click here to see answer by mananth(12270)

Question 545868: Find the equation of the line which is perpendicular to 3x-7y=-4 and passes through the point (-6,1)
Click here to see answer by mananth(12270)

Question 545951: I have been trying to figure out two problems dealing with a system of three linear equations and I keep getting confused with the steps. I used the elimination and addition method but I'm stuck.

Problem 1 is: Problem 2 is: 2x+y-z=10 3x+4y+z=14 6x+5y-2z=23 2y+7z=25 3x-y+z=5 -2y+3z=5

Click here to see answer by Edwin McCravy(8909)

Question 546290: 2x+y=3
Click here to see answer by user_dude2008(1861)

Question 546400: solve the system of equations by using the substitution method
3x-4y=29
y=x-8
Click here to see answer by mananth(12270)

Question 546415: Trail Snax Corp. mixes raisins that cost $5.00 per kg with peanuts that cost $3.80 a kg. How many kilograms of raisins should be mixed with 10 kg of peanuts to obtain a mixture worth $4.00 per kilogram?
Click here to see answer by mananth(12270)

Question 547050: 2y=2x-2
x=y+1
Click here to see answer by mananth(12270)

Question 547201: The value of -7 + 24 ÷ (-3)(2) is
Click here to see answer by rfer(12660)

Question 547329: how do i simplify?
2mn x 5m2n = (That 2 after m is a squared)
Click here to see answer by stanbon(57347)

Question 547672: 6x+12y=-6 and 2x+5y=0
Click here to see answer by mananth(12270)

Question 547596: A plane is cruising at an altitude of 24,000 ft. The plane begins to descend at a rate of 20 ft per sec. What equation gives the altitude h (in feet) of the plane as a function of the time t (in seconds) since it began descending? What is the altitude of the plane after 5 minutes?
Click here to see answer by mananth(12270)

Question 547792: what is the y-intercept of the line given by the equation below? enter your answer as an ordered pair y = -10x + 14
Click here to see answer by JBarnum(2044)

Question 547848: x-7y=1
-3x-6y=-3 <-- Solve using substitution or elimination method?
Click here to see answer by solver91311(16885)

Question 547847: x-7y=1
-3x-6y=-3 <-- Solve using substitution or elimination method?
Click here to see answer by solver91311(16885)

Question 548082: One saw and 4 hammers cost $72. Two saws and 6 hammmers cost $114. How much does each item cost?
Click here to see answer by mananth(12270)

Question 548202: What is the slope of a line perpendicular to f(x) = 2x - 4?
Click here to see answer by JBarnum(2044)

Question 548386: Solve the system of equations using substitution.
x2 + y2 = 169
x + y = 17
Click here to see answer by mananth(12270)

Question 548446: Kenisha sells athletic shoes part time at a department store. She can earn either $500 per month plus a 4% commission on her total sales, or $400 per month plus a 5% commission on total sales. What is the total price of the athletic shoes Kenisha needs to sell to earn the same income from each pay scale.
I only have a clear idea on the system of equations.
500+0.04c
400+0.05c
Click here to see answer by rfer(12660)

Question 548562: what is the solution?
6x - 7y=-56
4x + 52=y
Click here to see answer by mananth(12270)

Question 548574: Solve the system of equations.
x + 3y + 5z = -4
3y + 3z = -6
z = 2
Click here to see answer by mananth(12270)

Question 548571: Graph the system of inequalities.
-x + 2y less than and equal to -6
3x + 2y > -1
Click here to see answer by mananth(12270)

Question 548648: 3x+y=16
2x-3y=-4
Click here to see answer by Hsj7339(2)

Question 548732: what is the slope of the following line? 3x+7y=4
Click here to see answer by jim_thompson5910(28595)

Question 548732: what is the slope of the following line? 3x+7y=4
Click here to see answer by bucky(2189)

Question 549029: im trying to solve for x. the question is 5 divided by x equals to 25? as in 5/x=25. how would i rearrange that to find x? thanks
Click here to see answer by mathie123(224)

Question 549310: write the eqaution of a line with a parallel slope tp y=2x-6 and through the point (4,2)
Click here to see answer by mathie123(224)

Question 549310: write the eqaution of a line with a parallel slope tp y=2x-6 and through the point (4,2)
Click here to see answer by stanbon(57347)

Question 549310: write the eqaution of a line with a parallel slope tp y=2x-6 and through the point (4,2)
Click here to see answer by josmiceli(9680)

Question 549350: write the equation of the line in slope intercept form that goes through the following two points (2,4) (6,1)
Click here to see answer by solver91311(16885)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845