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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 292956: y=3x-4
y=8
Click here to see answer by jim_thompson5910(35256)

Question 293087: y=3x+6
y=3x-2
Click here to see answer by richwmiller(17219)

Question 293092: I need help solving the system 5X - 2Y = 14
4X + 7Y = -6
Click here to see answer by Deina(147)

Question 293112: How do you solve these problems
2. How do you solve 4x +7y=14
x=41-8y
Click here to see answer by richwmiller(17219)

Question 293105: Jim can paint a house in 10 hours and Bill can paint the same house in 12 hours.How long will it take if they work together. Thanks!!
Click here to see answer by checkley77(12844)

Question 293104: Tom has 117 quarters and dimes worth a total of 15.75. How much of each does he have?? Thanks!!
Click here to see answer by checkley77(12844)

Question 293101: I have to create and solve an equation to answer this question. The perimeter of a rectangle is 210m. The length is 7m longer than the width. Determine the dimensions of the rectangle.
Click here to see answer by checkley77(12844)

Question 293100: I have a question. I have to create an equation to show how long it would take a submarine to reach a deoth of 428metres if it goes down 50 m every 5 minutes. Thanks!
Click here to see answer by checkley77(12844)

Question 293238: Graph the linear equation.
-4x - 36y = -36
Click here to see answer by Alan3354(69443)

Question 293267: I need to wirte an expression
a person joins a book club and the first six books are free but then each costs 8.98
how much did he pay for eight books
if a bill came through with the shipment of 53.88 how would you create aqnd solve the equation
thanks

Click here to see answer by stanbon(75887)

Question 293405: I need to solve and verify. 1/5(a-1) = 1/3(2a-3) Thanks everyone!
Click here to see answer by Alan3354(69443)

Question 293396: I have to solve and verify this question.
(4a-2)/5 - 1/2 = (3a+7)/2-1
Thanks for your help!!
Click here to see answer by Alan3354(69443)

Question 293525: okai i have a question it said write the slope intercept of the linear equation her it is m=2,b=6
Click here to see answer by jim_thompson5910(35256)

Question 293525: okai i have a question it said write the slope intercept of the linear equation her it is m=2,b=6
Click here to see answer by Alan3354(69443)

Question 293571: Find the missing coordinates of the given points
5x - 7y = 35
(0,),(0,)
Click here to see answer by stanbon(75887)

Question 293780: In the problem if there exist solutions of the homogeneous system of linear equations other than x=0, express the general solution as a linear combination of linearly independent column vectors.
x_1 + 2x_2 - x_3 = 0
2x_1 + x_2 + x_3 = 0
x_1 - x_2 + 2x_3 = 0

(x_1 means x subscript of 1)
Click here to see answer by richwmiller(17219)

Question 293845: solve for the indicated letter.
b=4c, for c
The solution is c=_______
Can you help me out please!
Click here to see answer by richwmiller(17219)

Question 293841: Trains A and B are traveling in the same direction on paralell tracks. Train A is traveling at 60 mph, and Train B is traveling at 70 mph. Train A passes a station at 11:10am , at what time will train B catch up to train A?
WHen will train B catch up to train A?
__:__ am or pm??___
Click here to see answer by richwmiller(17219)

Question 293849: Solve using the multiplication principle. DOnt forget to preform a check.
-7/8x=-9/10
The solution is x=______
Type an integer or fraction.
Can you help me please. i have come up with 3 diffretn answers
Click here to see answer by richwmiller(17219)

Question 293853: Solve by using the elimination method.
2r-9s=-10
9r+2s=40
What is the solution of the system ? Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A) the solution is_______(type an ordered pair. use integers or fractions for any numbers in the expression.)
B)There are infinitely number of solutions.
C) There is no solution.
Please help me with this mess!!!!!LOL
Click here to see answer by richwmiller(17219)

Question 293866: Please help me solve this equation: 2x=-10
Click here to see answer by Alan3354(69443)

Question 294553: Which equation describes a line that passes through (7,1) and is perpendicular to the line described by y = -1/2x + 3 ? POSSIBLE ANSWERS: A) y = 2x - 13 B) y = 2x - 7 C) y = 2x - 6 D) y = 2x + 3
Click here to see answer by richwmiller(17219)

Question 294569: Please show me how to solve this set of linear equations in three variables:
3a - 2b + 2c = 1
2a + 5b - 5c = 7
4a - 3b + c = -3
Click here to see answer by richwmiller(17219)

Question 294718: Find the slope of the line containing each given pair of points. If the slope is undefined, state this.
(0,9) and (-5,0)

Click here to see answer by dabanfield(803)

Question 294790: ``solve for the indicated letter.b=4c, for cThe solution is c=_______Can you help me out please!''.
Click here to see answer by rfer(16322)

Question 294787: ``Solve using the multiplication principle. DOnt forget to preform a check.-7/8x=-9/10The solution is x=______Type an integer or fraction. Can you help me please. i have come up with 3 diffretn answers''.
I have come up with 2 answers can you help me please!!!
Click here to see answer by rfer(16322)

Question 294881: Soybean meal is 16% protein and cormeal is 8% protein. How many pounds of each should be mixed together in order to get 320 pound mixture that is 13% protein?
How many pounds of cornemal should be in the mixture??__________
How many pounds of soybean meal should be in the mixture??__________
I am lost. can you please solve this for me!!!!
Click here to see answer by sarah1contreras(1)

Question 294888: 90% of what number is 45?
I cannot solve this. PLease help me!
Click here to see answer by Alan3354(69443)

Question 294907: I need help solving this word problem we are to use a system of linear equations to solve the problem.
Your teacher is giving you a test worth 100 points containing 40 questions. There are two-point questions and four-point questions on the test. How many of each type of question are on the test?
Please help this is really important!! thanks
Click here to see answer by richwmiller(17219)

Question 294928: Where do these 2 lines intersect?
-11x-11y=-22
-3.8x+1.4y=-9.7
We have tried and tried to figure it out, but can't seem to get it!! Thanks so much for your help!!
Click here to see answer by richwmiller(17219)

Question 294890: Translate to an algeraic expresssion.
The product of 38% and some number.
The translation is_________
Type the percentage as a deciomal.Use d to represent some number.
Click here to see answer by checkley77(12844)

Question 295001: If a system has an infinite number of solutions, use set-builder notation to write the solution set. If a system has no solution, state this.
Solve using the substitution method.
3y + x = 4,
x = 2y - 1
Click here to see answer by hmmimstuck(1)

Question 295019: Find the intercepts for the equations.
-4x + y = -4
Click here to see answer by PRMath(133)

Question 295206: ordered pairs(x,y) of numbers that satisfy the equation x-3y=8
Click here to see answer by Alan3354(69443)

Question 295206: ordered pairs(x,y) of numbers that satisfy the equation x-3y=8
Click here to see answer by richwmiller(17219)

Question 295306: Solve the problem by using two equations with two variables:
A twin-engined aircraft can fly 864 miles from city A to city B in 3 hours with the wind and make the return trip in 8 hours against the wind. What is the speed of the wind?
I just need help setting up the equations, then i can solve fine, but word problems are not my strong point...please help.
Click here to see answer by scott8148(6628)

Question 295416: Find an equation of the line containing the given pair of points. Write your final answer in slope-intercept form. ( -5, 6) and ( -8, 8)

Click here to see answer by richwmiller(17219)

Question 295415: Find an equation of the line having the specified slope and containing the indicated point. Write your answer in slope-intercept form.
m = -3; (- 7, 6)

Click here to see answer by checkley77(12844)

Question 295493: Determine the x- and y- intercepts ( if any) of the given equation. Show your work. Then plot the intercepts, and graph the line.
y = 3/2x -2
Click here to see answer by edjones(8007)

Question 295557: Solve using either elimination or substitution. Show your work. If the system has either no solution or an infinite number of solutions, state this.
16x-15y=-10
11x-7y=13
Click here to see answer by edjones(8007)

Question 295627: I hope someone can help... I have submitted 2 questions in the past any no one has replied.
my questions is;
Find the values of X and Y that solve the following system of equations:
2x-9y=-21
-3x-7y=11
So far this is what i have done;
-6x-27y=63
6x-14y=23
13y/13 = 41/13
y=41/13
2x-9y=-21
2x-9(41/13)=-21
...now what??? help, not sure how to solve with fraction
Click here to see answer by palanisamy(496)

Question 295630: what is the x and y intercepts for the equation y=x-1
Click here to see answer by palanisamy(496)

Question 295666: Graph the line
y-4=0(x+3)
Click here to see answer by richwmiller(17219)

Question 295563: Solve using elimination method.

2x+ 8y = 26
5x- 7y = -16
Click here to see answer by faceoff57(108)

Question 295732: what is the slope of the line y=9?
Click here to see answer by jim_thompson5910(35256)

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