Questions on Algebra: Linear Equations, Graphs, Slope answered by real tutors!

Tutors Answer Your Questions about Linear-equations (FREE)

Question 1094731: Complete the ordered pair so it is a solution of the equation: (-1/2,__)
3x �5y= 7.
I have attempted this and I got 17/13, but that does not seem plausible. I would really appreciate your help.
Thank you.
Click here to see answer by KMST(5328)

Question 1094769: Find the unique pair (x,y) that satisfies both equations simultaneously
2x+5y=13 and 7x-15y=26
Click here to see answer by josgarithmetic(39617)

Question 1094769: Find the unique pair (x,y) that satisfies both equations simultaneously
2x+5y=13 and 7x-15y=26
Click here to see answer by ikleyn(52780)

Question 1094805: Write the standard form of the equation of the line through the given point with the given slope.

Through: (1,2), slope 7
Click here to see answer by Alan3354(69443)

Question 1094805: Write the standard form of the equation of the line through the given point with the given slope.

Through: (1,2), slope 7
Click here to see answer by ultrakimidis1(8)

Question 1094806: Write the point-slope form of the equation of the line described.

Through: (4,2), parallel to y=-3/4x-5
Click here to see answer by Alan3354(69443)

Question 1094821: 3(2x-6)-3(4x+3)=4-3(x+1)
Click here to see answer by josgarithmetic(39617)

Question 1094821: 3(2x-6)-3(4x+3)=4-3(x+1)
Click here to see answer by MathTherapy(10552)

Question 1094834: The demand function for a good is given as , where p is the price (in dollars) per unit of the good and q is the quantity sold (in units). The total cost of producing 10 units of the good is $50 and that of producing 20 units is $70.
a. Find the quadratic revenue function in terms of quantity produced and sold q.
b. Write the restricted domain and the restricted range of the revenue function.
c. Assume the relationship between quantity produced and total cost is linear, write down the total cost function in terms of quantity produced q.
d. Find the break-even production and sales level.
e. How many units should be produced and sold in order to get the maximum profit? (6 marks)

Click here to see answer by ikleyn(52780)

Question 1094857: : The demand function for a good is given a
Click here to see answer by richwmiller(17219)

Question 1094855: : The demand function for a good is given as
Click here to see answer by richwmiller(17219)

Question 1094861: The demand function for a good is given as
Click here to see answer by richwmiller(17219)

Question 1094850: line parallel to y=1/8x-12 and goes through point (0,-10)
Click here to see answer by richwmiller(17219)

Question 1094851: line perpendicular to y=2x-5 and goes through point (-2,3)
Click here to see answer by josgarithmetic(39617)

Question 1095072: Slope=3/5throught (-4,0)
Click here to see answer by josgarithmetic(39617)

Question 1095148: Please help me obtain the equation of the line through the point (1, -3) with gradient -2
Click here to see answer by rothauserc(4718)

Question 1095291: Which of the follow points lies on the line 2y = 3x + 4
A) (2,-5)
B) (5,2�
C) (-2,5)
D) 2,5)
E) (-2,-5)
Click here to see answer by ikleyn(52780)

Question 1095407: Considering the linear equation 3x-6y=24: (a) What is the slope of the line represented by the given equation? (b) What is the slope of any line parallel to the given line? (c) What is the slope of any line perpendicular to this line?
Click here to see answer by josgarithmetic(39617)

Question 1095431: Solve for n:
I = E/r+R/n
(E is the numerator here while r+R/n is the denominator/divisor)
Click here to see answer by josgarithmetic(39617)

Question 1095441: Find three consecutive integers whose sum is 33?

Click here to see answer by josgarithmetic(39617)

Question 1095477: what does -5 times -5 = and why?
Click here to see answer by ikleyn(52780)

Question 1095681: Find all the solutions to the equation x+√x-2 =4
Click here to see answer by josgarithmetic(39617)

Question 1095680: If x+y=4,xy=2 THEN X^6+Y^6=?

Click here to see answer by jim_thompson5910(35256)

Question 1095680: If x+y=4,xy=2 THEN X^6+Y^6=?

Click here to see answer by ikleyn(52780)

Question 1095719: Building Lot A requires $50,000 down plus an additional $100 per square foot. Building Lot B requires $60,000 down plus an additional $50 per square foot. What size lot would make the two lots the same price?
Click here to see answer by richwmiller(17219)

Question 1095740: Find the equation for the line that passes through the point (2,0), and that is parallel to the line with the equation −9/4x+3y=18
Click here to see answer by greenestamps(13200)

Question 1095807: Solve using substitution method
For 2000 dollars are bought 15 notebooks and 12 markers. How much does 1 notebook and much does 1 marker cost, if 3 markers cost as much as 6 notebooks?
solving looks something like
12x+15y=2000
6y=3x
Please explain thoroughly and step by step :)
Click here to see answer by Theo(13342)

Question 1095804: The sum of the years of the mother and the daughter is 56. 5 years ago the mother was 2 times older than the daughter. How old are they now?
The solving looks something like
x+y=56
(x-5)=(y-5)*2
Please explain thoroughly and step by step :)
Click here to see answer by Alan3354(69443)

Question 1095806: Find the value of k so that the line containing the points (-1,-5) and (-3,k) is perpendicular to the line containing the points (-7,-1) and (0,-7).
Click here to see answer by josgarithmetic(39617)

Question 1095859: Find an equation for the line perpendicular to the line 4x−7y=94x−7y=9 having the same y-intercept as 5x+2y=−55x+2y=−5.

Click here to see answer by Alan3354(69443)

Question 1095915: The height s of a ball, in feet, thrown with an initial velocity of 112 feet per second from an initial height of 6 feet is given as a function of time t( in seconds) by s(t)=-16t^2+112t+20. What is the maximum height of the ball? At what time does the maximum height occur?
Click here to see answer by ikleyn(52780)

Question 1095919: need help with this problem. example with explanation, please. I want to understand the basics.
1. 6x - y = -9
x + 2y = 5

Click here to see answer by ikleyn(52780)

Question 1095919: need help with this problem. example with explanation, please. I want to understand the basics.
1. 6x - y = -9
x + 2y = 5

Click here to see answer by josgarithmetic(39617)

Question 1095923: 2791 concert tickets were sold for a total of $34,715. If students paid $10 per ticket and non students paid $15, how many student tickets were sold
Click here to see answer by ikleyn(52780)

Question 1095881: What is the Standard form of the equation
Through (1,2) slope=7
I'm not sure but is this the correct answer:
2y=7x=1
Click here to see answer by MathTherapy(10552)

Question 1095978: A gardener wishes to use a fungicide for his garden. He has 10 litres of 1 % solution of fungicide and what volume of 50% concentrate to the nearest ml would he need to add to his 10 litres to produce 2% solution of fungicide?
I am totally lost by this question.
I began with....
0.01 x (10 - X) + x Where 0.01 is 1% in decimal form, 10 is the number of litres and x is the volume of concentrate...
Click here to see answer by ikleyn(52780)

Question 1095970: Right an equation of a line through the point (5,2) and parallel to 3x +4y=-50. Write your answer in. Point slope form
Click here to see answer by Alan3354(69443)

Question 1096029: How do i find the standard form of -4x+3y=15?

Click here to see answer by Alan3354(69443)

Question 1096022: the line containing 1,-3 and 3,y is perallel to the line containing 5,-6 and 9,y find the value of y
Click here to see answer by Alan3354(69443)

Question 1096022: the line containing 1,-3 and 3,y is perallel to the line containing 5,-6 and 9,y find the value of y
Click here to see answer by MathTherapy(10552)

Question 1096013: the line containing 8,7 and 7,6 is perpendicular to the line containing 2,4 and x, 3 find the value of x
Click here to see answer by Alan3354(69443)

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, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 27136..27180, 27181..27225, 27226..27270, 27271..27315, 27316..27360, 27361..27405, 27406..27450, 27451..27495, 27496..27540, 27541..27585, 27586..27630, 27631..27675, 27676..27720, 27721..27765, 27766..27810, 27811..27855, 27856..27900, 27901..27945, 27946..27990, 27991..28035, 28036..28080, 28081..28125, 28126..28170, 28171..28215, 28216..28260, 28261..28305, 28306..28350, 28351..28395, 28396..28440, 28441..28485, 28486..28530, 28531..28575, 28576..28620, 28621..28665, 28666..28710, 28711..28755, 28756..28800, 28801..28845, 28846..28890, 28891..28935, 28936..28980, 28981..29025, 29026..29070, 29071..29115, 29116..29160, 29161..29205, 29206..29250, 29251..29295, 29296..29340, 29341..29385, 29386..29430, 29431..29475, 29476..29520, 29521..29565, 29566..29610, 29611..29655, 29656..29700, 29701..29745, 29746..29790, 29791..29835, 29836..29880, 29881..29925, 29926..29970, 29971..30015, 30016..30060, 30061..30105, 30106..30150, 30151..30195, 30196..30240, 30241..30285, 30286..30330, 30331..30375, 30376..30420, 30421..30465, 30466..30510, 30511..30555, 30556..30600, 30601..30645, 30646..30690, 30691..30735, 30736..30780, 30781..30825, 30826..30870, 30871..30915, 30916..30960, 30961..31005, 31006..31050, 31051..31095, 31096..31140, 31141..31185, 31186..31230, 31231..31275, 31276..31320, 31321..31365, 31366..31410, 31411..31455, 31456..31500, 31501..31545, 31546..31590, 31591..31635, 31636..31680, 31681..31725, 31726..31770, 31771..31815, 31816..31860, 31861..31905, 31906..31950, 31951..31995, 31996..32040, 32041..32085, 32086..32130, 32131..32175, 32176..32220, 32221..32265, 32266..32310, 32311..32355, 32356..32400, 32401..32445, 32446..32490, 32491..32535, 32536..32580, 32581..32625, 32626..32670, 32671..32715, 32716..32760, 32761..32805, 32806..32850, 32851..32895, 32896..32940, 32941..32985, 32986..33030, 33031..33075, 33076..33120, 33121..33165, 33166..33210, 33211..33255, 33256..33300, 33301..33345, 33346..33390, 33391..33435, 33436..33480, 33481..33525, 33526..33570, 33571..33615, 33616..33660, 33661..33705, 33706..33750, 33751..33795, 33796..33840, 33841..33885, 33886..33930, 33931..33975, 33976..34020, 34021..34065, 34066..34110, 34111..34155, 34156..34200, 34201..34245, 34246..34290, 34291..34335, 34336..34380, 34381..34425, 34426..34470, 34471..34515, 34516..34560, 34561..34605, 34606..34650, 34651..34695, 34696..34740, 34741..34785, 34786..34830, 34831..34875, 34876..34920, 34921..34965, 34966..35010, 35011..35055, 35056..35100, 35101..35145, 35146..35190, 35191..35235, 35236..35280, 35281..35325, 35326..35370, 35371..35415, 35416..35460, 35461..35505, 35506..35550, 35551..35595, 35596..35640, 35641..35685, 35686..35730, 35731..35775, 35776..35820, 35821..35865, 35866..35910, 35911..35955, 35956..36000, 36001..36045