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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 60714: a) y^2-11y+28
b) 4x^2-11x+6
Click here to see answer by checkley71(8403)

Question 60750: HEY JUST A QUICK ? I HOPE SOMEONE CAN HELP ME WITH ASAP
WRITE AN EQN. FOR THE LINE THAT IS PERPENDICULAR TO THE GIVEN LINE.
Y=X-3;(4,6)
TKS FOR THE HELP
Click here to see answer by jai_kos(139)

Question 60727: The line through A(x,5) and B(4,3) is perpendicular to a line whose slope is 3/5. Find the value of x.
Click here to see answer by josmiceli(19441)

Question 60773: how do you solve for constant varibles
Click here to see answer by Edwin McCravy(20055)

Question 60805: graph each system of equations and describe it as consistent and independent,consistent and dependent, or inconsistent.
y=-x-2
x+y=-4

Click here to see answer by funmath(2933)

Question 60796: Given f(x) = 5x2 � 3x + 1, find f(�2).
Click here to see answer by checkley71(8403)

Question 60793: Rewrite the equation y = �2x � 5 as a function of x.
Click here to see answer by checkley71(8403)

Question 60792: The ideal height (in inches) of a man is related to his weight(in pounds) by the formula:
H=W/5+190/5
Solve for W and calculate how much a man of height 62 inches should weigh.
Click here to see answer by checkley71(8403)

Question 60798: Solve the system by addition. x + y = 4
x � y = 10
Click here to see answer by funmath(2933)

Question 60790: The line through A(x,5) and B(4,3) is perpendicular to a line whose slope is 3/5. Find the value of x.
Click here to see answer by checkley71(8403)

Question 60860: The sum of two numbers is 39. Their difference is 11. What are the two numbers?
Click here to see answer by consc198(59)

Question 60861: Sally bought three chocolate bars and a pack of gum and paid $1.75. Jake bought two chocolate bars and four packs of gum and paid $2.00. Find the cost of a chocolate bar and the cost of a pack of gum.
Click here to see answer by jai_kos(139)

Question 60859: Solve the system by addition or substitution. 4x � y = �3 y = 4x + 8
Click here to see answer by jai_kos(139)

Question 60858: Solve the system by substitution. x + y = 12 y = 2x
Click here to see answer by jai_kos(139)

Question 60799: Solve the system by addition. 5x � 3y = 13
4x � 3y = 11
Click here to see answer by jai_kos(139)

Question 60857: Solve the system by addition. 5x � 8y = �14 x � 2y = �6
Click here to see answer by checkley71(8403)

Question 60856: Solve the system by addition. 5x � 3y = 13 4x � 3y = 11
Click here to see answer by praseena(37)

Question 60896: how can i solve the system by graphing.
x + y = 4
�x + y = 2

Click here to see answer by funmath(2933)

Question 60905: Fully Factor.
1. 3a^2-36a+36
2. 4(x-3)^2 - 9(x+4)^2
Help
Click here to see answer by joyofmath(189)

Question 60922: 21. 3x+5y=15
23. -4x+3y=12
25. x-7y=3 I am not sure how to solve with 2 variables. please help me!!!
Click here to see answer by checkley71(8403)

Question 60950: Instructions: Solve each system by the substitution method.
What is the solution for 6x+9y=6
2x=2-3y
Click here to see answer by checkley71(8403)

Question 60950: Instructions: Solve each system by the substitution method.
What is the solution for 6x+9y=6
2x=2-3y
Click here to see answer by joyofmath(189)

Question 61001: Evaluate the function for the given value of x. then graph the function.
29. f(x)=x-7 when x=-2
30. f(x)=-x+4 when x=4
31. f(x)=2x+6 when x=-3

32. f(x)=1.5x-42 when x=-9
Click here to see answer by checkley71(8403)

Question 61008: how can i solve the system by graphing.
2x + y = 4
x + y = 3

Click here to see answer by funmath(2933)

Question 61015: A motorcycle manufacturer produces three different models: the Avalon, the Durango, and the Roadtripper. Production restrictions require it to make, on a monthly basis, 10 more Roadtrippers than the total of the other two models, and twice as many Durangos as Avalons. The shop must produce a total of 490 cycles per month. How many cycles of each type should be made per month?
I just don't know how to set it up!!!! Thanks in advance!
Click here to see answer by checkley71(8403)

Question 61020: Instructions: Solve each system by the elimination method.
What is the solution for 5x-y=5
-5x+2y=0
Click here to see answer by checkley71(8403)

Question 61027: Instructions: Solve each system by the substitution method.
What is the solution for 4x-y=-3
y=4x+3
Click here to see answer by checkley71(8403)

Question 61035: Given f(x) = x2 � 3x + 9, find f(0).
Click here to see answer by funmath(2933)

Question 61036: Rewrite the equation 2x � 3y = �6 as a function of x
Click here to see answer by funmath(2933)

Question 61042: Instructions: solve each system by the eliminsation method.
What is the solution for x-y=4
x-y=-3
Click here to see answer by funmath(2933)

Question 61079: "Arctic Antifreeze" is 18%alchol and "frost No-More" is 10%alchol. How many liters of each should be mixed to get 20L of a mixture that is 15% alchol?
Click here to see answer by uma(370)

Question 61080: A community water tank can be filled in 18hr by the town office well alone and in 22hr by the high school will alone. How long will it take to fill the tank if both wells are working?
Click here to see answer by uma(370)

Question 61081: The HP officejet 6110 takes twice the time required by the Canon Imageclass D680 to photocopy brochures for the New Bretton Arts Council year-end concert. If working together the two machines can complete the job in 24min, how long would it take each machine, working alone to copy the brochures?
Click here to see answer by uma(370)

Question 61082: E-chem Testing has a solution that is 80% base and another that is 30% base. A technician needs 150L of a solution that is 62% base. The 150L will be prepared by mixing the two solutions on hand. How much of each should be used?
Click here to see answer by uma(370)

Question 61037: Solve the system by addition. �3x � 4y = �2
x + 3y = �6
Click here to see answer by uma(370)

Question 61093: The current in ther lazy river moves at a rate of 4mph. Monica'sdinghy motors 6mi upstream in the same time it take to motor 12mi downstream. What is the speed of the dinghy?
Click here to see answer by funmath(2933)

Question 61119: If a = 4 and b = �1, evaluate 5a � b.
Click here to see answer by tutorcecilia(2152)

Question 61123: Find the slope and the y-intercept. y = �9x + 8
Click here to see answer by tutorcecilia(2152)

Question 61100: Instructions: Solve each system by the substitution method.
What is the solution for 3x+y=-7
x-y=-5
Click here to see answer by jai_kos(139)

Question 61122: Solve. �4(x + 10) + 2x = 3x + 0
Click here to see answer by jai_kos(139)

Question 60931: 10X-3Y=30
Click here to see answer by tutorcecilia(2152)

Question 61121: Solve. 10x � 4 � 5x = 6 + 3x � 8
Click here to see answer by jai_kos(139)

Question 61136: Instructions: Solve each equation by the elimination method.
What is the solution for 4x+2y=3
y=-x
Click here to see answer by asha(30)

Question 60943: I haven't been successfull figuring this one out. Can anyone help?
2x + y = 0
x + 1.5y = 4.5
Solve the system of linear equations. Thank You!
Click here to see answer by jai_kos(139)

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, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515