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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 260987: Help !! "solve each of the equations"
-2x+3y =-9
y= ?????
Click here to see answer by solver91311(17077)

Question 260987: Help !! "solve each of the equations"
-2x+3y =-9
y= ?????
Click here to see answer by rfer(12729)

Question 261193: 2x + 7y = 4. solve for y
7y/7=-2x+4
y=2(-x+2)/7
Click here to see answer by jcamille(5)

Question 261359: 4x-2y=6
1x-6y=18
graphing
Click here to see answer by richwmiller(9144)

Question 261618: y=2x-6
y=5x+15
Click here to see answer by jojo14344(1512)

Question 261618: y=2x-6
y=5x+15
Click here to see answer by butterfliiizzz(18)

Question 261735: Solve the following system of simultaneous linear equations
3x-5y=6
-3x-5y=4
Click here to see answer by stanbon(57960)

Question 261735: Solve the following system of simultaneous linear equations
3x-5y=6
-3x-5y=4
Click here to see answer by checkley77(12569)

Question 261738: suppose you can run 250meters per minute downhill and 180 meters per minute uphill. One day you run 1557 meters in 7.6 minutes always either uphill or downhill. Solve the linear system to find the number of meters you ran uphill and downhill.
Click here to see answer by Theo(3504)

Question 261742: 12+20ln(x)=90
Click here to see answer by Fombitz(13828)

Question 261757: -3x + y = 4 solve for x
Click here to see answer by richwmiller(9144)

Question 261755: 2x/-3 = -12/7
Click here to see answer by Stitch(352)

Question 261759: x+9y=79
-7x+9y=23
Click here to see answer by richwmiller(9144)

Question 261776: You planted a 16 inch hemlock tree that grows at a rate of 4 inches per year. Then 5 years later you planted a 10inch blue spruce that grows at a rate of 6 inches per year. In how many years after you planted the hemlock tree will the two trees be the same height? How tall will the trees be?
Click here to see answer by williamson.family05(2)

Question 261846: Find an equation of the line that has the same y-intercetp as the line x-3y=6 and contains the point (5,-1).
Click here to see answer by solver91311(17077)

Question 261876: suppose M is between L and N use segment Additing postulate to solve for the variable then find lengths of line LM, line MN and line LN.
LM= 3x+8
MN= 2x-5
LN= 23
Click here to see answer by drk(1908)

Question 261879: how to solve using substitution
y=2x-3 and y=-x-3
Click here to see answer by drk(1908)

Question 261879: how to solve using substitution
y=2x-3 and y=-x-3
Click here to see answer by richwmiller(9144)

Question 261879: how to solve using substitution
y=2x-3 and y=-x-3
Click here to see answer by solver91311(17077)

Question 261889: y=1/2x=3 and y=-3/4x-2
Click here to see answer by richwmiller(9144)

Question 261950: how do i find the point slope equation of this line using the point (3,5)
Click here to see answer by dabanfield(803)

Question 261950: how do i find the point slope equation of this line using the point (3,5)
Click here to see answer by checkley77(12569)

Question 261949: I don't understand how to use the point slope equation...example if a line passes through the point (3,5) and (1,2) it's slope is what???
Click here to see answer by checkley77(12569)

Question 262091: y=-x+16
y-x=2
I have to use substution method.
I got x=-5 and y=-3, but i doubt it is right
Click here to see answer by unlockmath(1614)

Question 262316: how do i solve word problems involving coin problems/stamp problems and find integers in word problems
Click here to see answer by stanbon(57960)

Question 261108: Put the following systems into Slope-Intercept form, then us a graphing calculator to find the point if intersection of the two lines. Sketch a picture of each graphs with their solution.
2/3 - y = -4
-5x + y = -9
????
Click here to see answer by richwmiller(9144)

Question 262410: constructing equations
how do you construct this into a equatin?
a spa had specials for new members. they can get 3 facials and 5 manicures for $114 or 3 facials and 2 manicures for $78. what are the prices for facials and manicures?
Click here to see answer by Theo(3504)

Question 262451: the sum of two numbers is 42 the greater number is three more than twice the lesser number. what are the numbers?
constructing equations
how do i construct this to a equation?
Click here to see answer by stanbon(57960)

Question 262453: constructing equations
a trip to the waterpark cost a group of 13 children and 2 adults and 2 adults $137.50. another group of 9 children and 2 adults paid $103.50. how much does each type of ticket cost?
how do i construct by a equation
Click here to see answer by richwmiller(9144)

Question 262530: the sum of two numbers is 3. the difference between the two numbers 1 solve by graphing
Click here to see answer by richwmiller(9144)

Question 261659: what is the standard form of a circle with the radius of 4 and center 0f 0,0

Click here to see answer by Alan3354(31513)

Question 262683: Solve using the elimination method
-0.9x+0.8y=14.6
-0.3x+0.1y=3.7
Click here to see answer by palanisamy(496)

Question 262710: Find the x and y intercepts for each line. Apply elimination or subsitution to find the coordinates fo the point of the intersection
15x+11y=-17
8x-6y=74
Click here to see answer by richwmiller(9144)

Question 262748: Write an equation in point-slope form for the line through the given points or through the given point with the given slope. (5,7), (6,8).
Click here to see answer by drk(1908)

Question 262755: Write an equation in point-slope form for the line through the given points or through the given point with the given slope. (6,-2); m = -4/3
Click here to see answer by Alan3354(31513)

Question 262754: Write an equation in point-slope form for the line through the given points or through the given point with the given slope. (4,7); m = 3/5
Click here to see answer by Alan3354(31513)

Question 262751: Write an equation in point-slope form for the line through the given points or through the given point with the given slope. (1,2), (3,8)
Click here to see answer by Alan3354(31513)

Question 262752: Write an equation in point-slope form for the line through the given points or through the given point with the given slope. (-2,3); m = 4
Click here to see answer by butterfliiizzz(18)

Question 262749: Write an equation in point-slope form for the line through the given points or through the given point with the given slope. (-2,3); m = -1
Click here to see answer by butterfliiizzz(18)

Question 262900: The sum of the digits of a certain two-digit number is 7.Reversing the digits increases the number by 9.What is the number? Write and solve linear systems of equation for these problems.
Click here to see answer by ankor@dixie-net.com(15746)

Question 262906: -2x-3y=-11
6x+5y=13
Click here to see answer by drk(1908)

Question 262876: A certain two-digit number has a value that is 2 more than 6 times the sum of its digits. The tens digit is 1 more than the units digit. Find the number by using linear sytems.
Click here to see answer by mananth(12270)

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