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

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 Linear Solvers Practice Answers archive Word Problems Lessons In depth

 Question 146898: 6) Graph the equation and identify the y-intercept y+x=-9 the y-intercept is Click here to see answer by jim_thompson5910(28595)
 Question 146898: 6) Graph the equation and identify the y-intercept y+x=-9 the y-intercept is Click here to see answer by Fombitz(13828)

 Question 146899: 6) Graph the equation and identify the y-intercept y+x=-9 the y-intercept is Click here to see answer by jim_thompson5910(28595)

 Question 146956: solve the system using the substitution method. present as an ordered method. If not, specify whether the answer is no solution or infinite many solution 4x + y=4 2x + 8y=0 Click here to see answer by jim_thompson5910(28595)

 Question 146931: Solve system using the subsitution method" x^2+3y=25 x+y=7 Click here to see answer by 24HoursTutor.com(40)

 Question 147030: Write the equation of a line whose slope is 6 and whose y intercept is -3. Click here to see answer by nerdybill(6959)

 Question 147027: I really need help with solving a system using the elimination method. Please! x^2+3y=25 x+y=7 Click here to see answer by ankor@dixie-net.com(15652)

 Question 147031: Find the x and y intercepts of each linear equation. Be sure to write your answers as ordered pairs. A. y = 3x - 6 B. 6y = -x + 2 Click here to see answer by checkley77(12569)

 Question 147162: For 1989 and 1990 Dave Johnson had the highest decathlon score in the world. When Johnson reached a speed of 32 ft/sec on the pole vault runway, his height above the ground t seconds after leaving the ground was given by h= -16t^2+32t . (The elasticity of the pole converts the horizontal speed into vertical speed.) Determine how long Johnson was in the air. For how long was he more than 14 ft in the air? Click here to see answer by nerdybill(6959)

 Question 147161: The total profit (in dollars) for sales of x rowing machines is given by P(x)=-02x^2+300x-200. What is the profit if 500 are sold? For what value of x will the profit be at a maximum Click here to see answer by ankor@dixie-net.com(15652)

 Question 147251: 9x-5y=-35 , 5y-9x=35. what is the solution to the system of equations? is the system consistant? Click here to see answer by jim_thompson5910(28595)

 Question 147333: 9x-4y=8 4y-9x=-8 consistant or inconsistant dependant or independant What is the solution of the system of equations a. infinetly many solutions b. a point c. no solution Click here to see answer by jim_thompson5910(28595)

 Question 147346: Hi I need help with this word problem. I can not get what the 3rd equation should be. Here is the problem: Adult tickets to a movie theater cost \$7.25 for adults, \$6.25 for senior citizens and \$5.00 for children. Over the weekend the theater sold 355 tickets and had a revenue of \$2133.75. It is known there were twice as many children's tickets sold as there were senior citizen tickets sold. How many of each ticket were sold? This is as far as I could get. Adult Senior citizens Children x + Y + Z = 355 7.25x + 6.25y + 5.00Z = 2133.75 Click here to see answer by ankor@dixie-net.com(15652)

 Question 147355: Hi, I dont know what Im doing wrong I need help please. Here is the question: One year ago you invested \$4300 into three accounts that earn 3.25%, 4%, and 5.75% annual interest. The interest you earned after one year is \$193. You remembered you invested three times as much in the 4% account than you did the 3.25% account. How much did you invest in each type of account? This is what i have so far, I dont think its right. x + y + Z = 4300 325x + 400Y + 575z = 19300 Y=3x x + (3x) + Z = 4300 4x + z = 4300 325x + 400 (3x) + z =19300 1525x +575z = 19300 (-575) 4x + z = 4300 (-575) -2300x - 575z =-2472500 1525x + 575z = 19300 -775x = -2453200 x=3165.4 then when I do 3 times x to get y it doesnt fit with the total of 4300. I dont know please help me thank you. Click here to see answer by vleith(2825)
 Question 147355: Hi, I dont know what Im doing wrong I need help please. Here is the question: One year ago you invested \$4300 into three accounts that earn 3.25%, 4%, and 5.75% annual interest. The interest you earned after one year is \$193. You remembered you invested three times as much in the 4% account than you did the 3.25% account. How much did you invest in each type of account? This is what i have so far, I dont think its right. x + y + Z = 4300 325x + 400Y + 575z = 19300 Y=3x x + (3x) + Z = 4300 4x + z = 4300 325x + 400 (3x) + z =19300 1525x +575z = 19300 (-575) 4x + z = 4300 (-575) -2300x - 575z =-2472500 1525x + 575z = 19300 -775x = -2453200 x=3165.4 then when I do 3 times x to get y it doesnt fit with the total of 4300. I dont know please help me thank you. Click here to see answer by checkley77(12569)

 Question 147364: Hi, I dont know what Im doing wrong I need help please. Here is the question: One year ago you invested \$4300 into three accounts that earn 3.25%, 4%, and 5.75% annual interest. The interest you earned after one year is \$193. You remembered you invested three times as much in the 4% account than you did the 3.25% account. How much did you invest in each type of account? This is what i have so far, I dont think its right. x + y + Z = 4300 325x + 400Y + 575z = 19300 Y=3x x + (3x) + Z = 4300 4x + z = 4300 325x + 400 (3x) + z =19300 1525x +575z = 19300 (-575) 4x + z = 4300 (-575) -2300x - 575z =-2472500 1525x + 575z = 19300 -775x = -2453200 x=3165.4 then when I do 3 times x to get y it doesnt fit with the total of 4300. I dont know please help me thank you. Click here to see answer by stanbon(57361)

 Question 147481: 4x+5y=5 8x+10y=10 I need to solve this using elimination * I know I need to solve for x and use that answer in the next equation, but not sure what one I have to start with. Your help is appreciated. Click here to see answer by Alan3354(30993)

 Question 147689: solve using elimination method and check 15x+3y=-12 2x+y=8 Click here to see answer by mangopeeler07(462)
 Question 147689: solve using elimination method and check 15x+3y=-12 2x+y=8 Click here to see answer by GKelly(4)

 Question 147692: solve using elimination method and check 4x+y=1 x-2y=-2 Click here to see answer by mangopeeler07(462)

 Question 147698: hi, i need to solve this using elimination method and check. 4x+y=1 x-2y=-2 Click here to see answer by jim_thompson5910(28595)
 Question 147698: hi, i need to solve this using elimination method and check. 4x+y=1 x-2y=-2 Click here to see answer by GKelly(4)

 Question 147695: hi, i need to solve this using elimination method and check 15x+3y=-12 2x+y=8 Click here to see answer by jim_thompson5910(28595)

 Question 147702: hi, i need exact step by ste solution using elimination method and check. 15x+3y=-12 2x+y=8 Click here to see answer by jim_thompson5910(28595)

 Question 147704: hi, i need exactly step by step solution using elimination method and check.thank u. 4x+y=1 x-2y=-2 Click here to see answer by jim_thompson5910(28595)

 Question 147794: The solution to the system of equations: x + 3y = 12 4x - y = -17 Click here to see answer by Fombitz(13828)

 Question 147956: The perimter of a rectangle is 156m. The length is 3m more than twice the width. Find the dimensions. What is the length ??m What is the width ??m Thanks! Click here to see answer by edjones(7569)

 Question 147953: Solve by the elimination method. x+6y=45 -x+4y=15 What is the solution of the system? Click here to see answer by edjones(7569)

 Question 147955: The perimter of a rectangle is 66 inches. The length exceeds the width by 27 inches. Find the length and width. The length is ?? inches The width is ?? inches Please HELP. Click here to see answer by jim_thompson5910(28595)

 Question 148094: i need step by step solution using elimination x+y=-12 x-y=-4 Click here to see answer by jim_thompson5910(28595)
 Question 148094: i need step by step solution using elimination x+y=-12 x-y=-4 Click here to see answer by mangopeeler07(462)

 Question 148095: i need step by step solution using elimination method x-2y-8 x+2y-0 Click here to see answer by jim_thompson5910(28595)

 Question 148096: i need step by step solution using elimination method,thank u 3x+4y=-15 3x+6y=-21 Click here to see answer by jim_thompson5910(28595)

 Question 148123: I am trying to solve the following system of linear equation. x/4 - y/11 = -9/44 x/6 - y/13 = -1/26 Now i am familiar with the methods of solving these types of problems, such as addition method and substitution method, but when it comes to fractions, I'm lost. When you solve, would it be possible to explain each step. Thanks for all your help. Click here to see answer by jim_thompson5910(28595)

 Question 148128: Sheri drove southeast from Albuquerque to Roswell and then south to Carlsbad. She averaged 75 MPH along the route from Albuquerque to Roswell and averaged 70 MPH from Roswell to Carlsbad. She covered the entire 220 miles in 3 hours. How long did she take to drive from Albuquerque to Roswell? I started by making a table DISTANCE RATE TIME 270 75 3hrs 270 70 3hrs but the problems that I was coming up with did not make sense to me. Am I going about thie correctly? Click here to see answer by vleith(2825)
 Question 148128: Sheri drove southeast from Albuquerque to Roswell and then south to Carlsbad. She averaged 75 MPH along the route from Albuquerque to Roswell and averaged 70 MPH from Roswell to Carlsbad. She covered the entire 220 miles in 3 hours. How long did she take to drive from Albuquerque to Roswell? I started by making a table DISTANCE RATE TIME 270 75 3hrs 270 70 3hrs but the problems that I was coming up with did not make sense to me. Am I going about thie correctly? Click here to see answer by checkley77(12569)

 Question 148169: hi, i need exactly step by step solution using elimination and check,thank u 3y=7-2x 5y=7y-3 Click here to see answer by ankor@dixie-net.com(15652)

 Question 148184: Find the missing values that solve this equation. 2x+y = 6 (2,____) (0,____) (1,____) I need the missing points and steps :) Click here to see answer by mangopeeler07(462)

 Question 148182: I need the steps and the missing points Thanks :) Find the missing values that solve this equation. y = 3x (0, ____) (-1,____) (7,____) Click here to see answer by mangopeeler07(462)

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