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

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Question 139904: If someone could please help me with this, I would appreciate it. Find a slope-intercept form of equation for the line that passes through the given point and has the given slope. (-6, 3), m=6

Click here to see answer by checkley77(12844)

Question 139897: Can you please help me solve this?
Find the x-and y-intercepts of 2x-7y=6
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Question 140352: 9x+4y=-17
12y=-3-3x
using substition or elimination
Click here to see answer by ptaylor(2198)

Question 140354: 9x+4y=-17
12y=-3-3x
Click here to see answer by checkley77(12844)

Question 140353: Y=3x+5
2y-6x=4
using substitution
Click here to see answer by checkley77(12844)

Question 140350: using substition
y=3x+5
2y-6x=4
Click here to see answer by checkley77(12844)

Question 140349: using substition
y=3x+5
2y-6x=4
Click here to see answer by checkley77(12844)

Question 140348: using substition
y=3x+5
2y-6x=4
Click here to see answer by checkley77(12844)

Question 140383: Find the linear equation of the line that passes through (-3,2) and (5,-7).
Click here to see answer by stanbon(75887)

Question 140422: 5x-7y=-21
14y-5x=22
using substitution or elimination
Click here to see answer by MathTutorer(13)

Question 140611: O.K. what is (9, -1) and (6 , -2) in slope intercept form?
Click here to see answer by scott8148(6628)

Question 140614: what is (12, 5) and (-4, 1)
Click here to see answer by jim_thompson5910(35256)

Question 140700: you have 250 dinners
a child's plate costs $3.50
an adult's plate costs $7.00
a total of $1347.50 was collected
how many plates [child and adult] were served?
Click here to see answer by jojo14344(1513)

Question 140768: how many solutions does the linear system 3x + 5y = 8 and 3x + 5y = 1 have?
Click here to see answer by stanbon(75887)

Question 140769: Which ordered pair is the solution of the linear system 3x + y = -1 and y = -1/2x - 7/2?
Click here to see answer by Fombitz(32388)

Question 140902: 0.05x + 0.25y=66
0.15x + 0.05y=72
Solving by elimination.
Click here to see answer by checkley77(12844)

Question 140940: I NEED YOU TO SHOW ME THE GRAPH OF Y=2X+3, AND HOW TO SHOW THE WORK FOR THIS LINEAR EQUATION
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Question 140955: Can I please get assistance with the following problem?
factor f(x) into linear factors given that k is a zero of f(x)
f(x)=x^3-6x^2-25x+150;k=5
THANK YOU!!
Click here to see answer by jim_thompson5910(35256)

Question 140990: Solve the system by the elimination method.
5x + 2y = -7
7x - 3y = 19
What is the solution to the system???
I really do not understand these how to do these? Can someone please help??
Click here to see answer by jim_thompson5910(35256)

Question 140988: Here is another one that asks is it consistent or inconsistant, or dependent or independent. Then I am supposed to match with the correct system.
Solution (9, -6)
This one I cannot even take an educated or an uneducated guess I just do not no!! HELP
Click here to see answer by jim_thompson5910(35256)

Question 140980: How do I solve this system of equations using multiplication and addition method?
a/6 + b/4=5/2
2a/3 - b/2=-2
Hope you can understand this
Click here to see answer by jojo14344(1513)

Question 140984: Can you solve this system of equations by using multiplication with the addition method?
x/2+y/5=13/10
2x-3y=-10
Click here to see answer by stanbon(75887)

Question 140983: How do I solve this system of equations by using multiplication with the addition method?
1/5(x+2y)=-2
x/4-3y/2=15/2
Click here to see answer by ankor@dixie-net.com(22740)

Question 141075: How do I solve using a system of two equations in two variables?
When a plane flies into the wind, it can travel 3000km in 6 hours. When it flies with the wind, it can travel the same distance in 5 hours. Find the rate of the plane in still air and the rate of the wind.
Click here to see answer by stanbon(75887)

Question 141077: How do I solve using a system of two equations in two variables?
With the wind, a plane flew 1400 km in 4 hours. On the return trip, the pilot was forced to land after 1 h 30 min, having traveled only 450 km. Find the rate of the plane in still air and the rate of the wind.
Click here to see answer by ankor@dixie-net.com(22740)

Question 141088: 3x+4y=17
6y-2x=-20
Im stuck.
Click here to see answer by jim_thompson5910(35256)

Question 141088: 3x+4y=17
6y-2x=-20
Im stuck.
Click here to see answer by rapaljer(4671)

Question 141089: How do I solve by using a system of two equations in two variables?
A duck can fly 2400 m in 10 min with the wind. Against the wind, it can fly only two thirds of this distance in 10 min. How fast could the duck fly in still air? What is the rate of the wind?
Click here to see answer by stanbon(75887)

Question 141076: How do I solve using a system of two equations in two variables?
When Lucy swims with the current, she swims 18km in 2 hours. Against the current, she can swim only 14km in the same time. How fast can Lucy swim in still water? What is the rate of the current?
Click here to see answer by stanbon(75887)

Question 141110: Okay, my last problem and I just can't find a whole answer. How do I solve using a system of two equations in two variations?
A salmon swims 100 m in 8 min downstream. Upstream, it would take the fish 20 min to swim the same distance. What is the rate of the salmon in still water? What is the rate of the current?
Click here to see answer by scott8148(6628)

Question 141227: What are the x- and y-intercepts of the line with equation 4x + 5y = 40?
Click here to see answer by checkley77(12844)

Question 141236: Well i have to solve the following system of equations by substitution
0.5x-2y=1
-3y+x=4
I understand that I must get of the the equations to equal to either x or y so i can substitute.
i'll try the second one
-3y+x=4
x=4-3y is that right? if so, what to do next?
Click here to see answer by stanbon(75887)

Question 141225: how do you solve 1/3p=2/5p+2/3
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Question 141263: How do I solve uing two equations in two variable?
A shipment of TV sets, some weighing 30kg each and the others weighing 50 kg each, has a total weight of 880 kg. If there are 20 sets all together, how many weigh 50 kg?
I got the first equation of: 880=30t+50k, but can't figure out the second equation.
Click here to see answer by scott8148(6628)

Question 141292: How do I solve using a system of two equations in two variables?
Four years ago, Katie was twice as old as Anne was then. In 6 years, Anne will be the same age as Katie is now. How old is each now?
Click here to see answer by stanbon(75887)

Question 141295: How do i solve using a system of two equations in two variables?
Adam is 5 years younger than Eve. In one year, Eve will be 3 times as old as Adam was 4 years ago. Find their ages now?
Click here to see answer by Edwin McCravy(20056)

Question 141274: I want to thank everyone that has helped me with the last few weeks of algbra that i still do not understand totally, but at least I am trying....
Solve by the elimination method.
3x + 4y = 4
6x + 8y = 8
help please.
Click here to see answer by edjones(8007)

Question 141280: How do I solve using a system of equations in two variables?
Three times the larger of two numbers is equal to four times the smaller. The sum of the numbers i 21. Find the numbers.
Click here to see answer by oscargut(2103)

Question 141294: How do I solve using a system of two equations in two variables?
Jack is twice as old as Jill. In two years, Jack will be 4 times as old as Jill was 9 years ago. How old are they now?
Click here to see answer by scott8148(6628)

Question 141290: How do I solve by using a system of two equations in two variables?
Five years ago, Tom was one third as old as his father was then. In 5 years, Tom will be half as old as his father will be then. Find their ages now.
Click here to see answer by scott8148(6628)

Question 141359: How do I solve using a system of two linear equations in two variables?
Barry is 8 years older than his sister. In 3 years, he will be twice as old as she will be then. How old is each now?
Click here to see answer by nabla(475)

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