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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 340146: Please help!
I need to know step by step how to find the slope of the following:
2x+5y=8
Click here to see answer by nyc_function(2741)

Question 340373: -v-2v
Click here to see answer by solver91311(24713)

Question 340396: -5v-13>2
Click here to see answer by rfer(16322)

Question 340147: solve each equation?
5(2y-7)+8(y+6)=31
Click here to see answer by Fombitz(32388)

Question 340461: Customers of a phone company can choose between two servoce plans for long distance calls.The first plan has a $29 one time acavation fee and charges 14 cents per miniute. The second plan has no activation fee and charges 19 cents per minute.After how many minutes of long distance calls will the cost of the two palns be equal?
Click here to see answer by solver91311(24713)

Question 340458: on thursday a local hamburger shop sold a combined total of 308 hanburgers. the number of cheeze burgers sold was three times the number of hamburgers sold. How many hamburgers were sold om thursday?
Click here to see answer by solver91311(24713)

Question 340546: a gumball machine is filled with 122 balls and average of 7 balls are bought daily how may gumballs will be left in the machine after one week? Use three different representations to justify your answer and graph?
We identified y=122-7x can't find additional and do not know how to graph?
Click here to see answer by Alan3354(69443)

Question 340689: list 2 points on the graph of y=-3x+2
Click here to see answer by rfer(16322)

Question 340700: 2 / (z-5) = 3 / (z+6)

Click here to see answer by mananth(16946)

Question 340729: x + x/3 = 2

Click here to see answer by mananth(16946)

Question 340729: x + x/3 = 2

Click here to see answer by MathTherapy(10552)

Question 340742: I'm trying to help my friends kid with math homework and its been a while since I've done anything with graphs. The problem is...
The organizers of a walkathon are getting cost estimates from 2 printing companies for brochures to advertise the event.
C=cost in $ and n=#of brochures
Company A C=15+0.10n
Company B C=.25n
a. For what number of brochures are the costs the same for both companies, and what method did you use?
c. What info does the y-intercept represent for each equation?
I remembered enough to help her with b and d, but I'm lost on these two problems. I just can't remember how to find the answer. Thank you for your time.
Clark
Click here to see answer by Alan3354(69443)

Question 340836: find k so that the line joining (3,k) and (2,5) and the joining (-2,3) and (7,0) are parallel.
Click here to see answer by mananth(16946)

Question 340856: find the slope: 36x � 9y = 15
Click here to see answer by CharlesG2(834)

Question 341129: write each equation in slope-intercept form
y+3 = -3(x -6)
thank you.

Click here to see answer by stanbon(75887)

Question 341131: Find the equation of the line that goes through the given point
and has the given slope. Write the answer in slope-intercept
form.
(-1, -5), -8

thank you
Click here to see answer by stanbon(75887)

Question 341141: write an equation of a line that passes through 7,8 and is perpendicular to a line with a slope of (-7/6)
Click here to see answer by Alan3354(69443)

Question 341187: how do you find the slope of the straight line that passes
through (−1, 14) and (3, 4)
Click here to see answer by stanbon(75887)

Question 341221: Write an equation that is perpendicular to 2x+3y=6 with point (3,5).
Click here to see answer by Alan3354(69443)

Question 341221: Write an equation that is perpendicular to 2x+3y=6 with point (3,5).
Click here to see answer by stanbon(75887)

Question 341213: the sum of two numbers is 46, and the differance is 6. What are the numbers
larger number smaller number
Click here to see answer by nyc_function(2741)

Question 341257: Write the equation in slope-intercept form of the line passing through the point P(2,-7) and the perpendicular to 5x+27=18.
the answer my teacher gave us is Y=2/5x-39/5 . I got the 2/5x by solving for y what i dont understand is how she got 39/5. i keep going over to see if i have forgotten some part of the problem but i just dont see where i made the mistake
Click here to see answer by Alan3354(69443)

Question 341261: 2y - 6y + 24 = 32
Click here to see answer by texttutoring(324)

Question 340612: How would I graph (2, 6), m= 2/3?
Click here to see answer by nyc_function(2741)

Question 341273: Write the equation in slope-intercept form of the line passing through the point(-3,-1) and parallel to 5x+2y=18.

OK so i tried it and it's not turning out to be the right answer i must be missing something because i did it like the other question i just asked I'm confused
i know the slope is the same it's just the b term i keep getting wrong
the slope equals (-5/2) but the teacher says that b= 17/2 I'm having problems with this part
the whole answer is y=-5/2x-17/2
Click here to see answer by texttutoring(324)

Question 340609: (b-1)-(3b-4)=b
Click here to see answer by nyc_function(2741)

Question 341363: please hepl me solve this question: Write an equaition for the line that passes throught point p and is perpendicular to the line with the given equation; P(3,5) y=4.
I know I need point slope and the spe should be the negative reciporacal of the perpendicular line but i dont remember how to do it without an x intercept.
Thank you for your help.
Click here to see answer by stanbon(75887)

Question 341432: Maximize 5x + 3y
Subject to the constraints
5x + 2y <= 40
3x + 6y <= 48
x <= 7
2x - y >= 3
x,y >= 0
Graph the following equation

Click here to see answer by Fombitz(32388)

Question 341463: z = 17 - y solve for y
Click here to see answer by rfer(16322)

Question 341466: a line passes through the point (-4,-3 and a slope of 3 write the equation for this line
Click here to see answer by Fombitz(32388)

Question 341049: Find m and b and graph.
y=4-3x
Click here to see answer by Fombitz(32388)

Question 341016: A naturalist estimated the total number of rainbow trout in a certain lake using the capture-mark-recapture technique. He netted, marked, and released 200 rainbow trout. A week later, allowing for thorough mixing, he again netted 200 trout, and found 8 marked ones among them. Assuming that the proportion of marked fish in the second sample was the same as the proportion of all marked fish in the total population, estimate the number of rainbow trout in the lake.
Click here to see answer by ankor@dixie-net.com(22740)

Question 341512: Write the equation of the line that has the indicated slope and contains the indicated point. Express the final equation in standard form. M=5, (-1,4)
Click here to see answer by stanbon(75887)

Question 341475: Draw line 1 through (-4,0) and (0,6). What is the slope of any line parallel to line 1? Draw line 2 through the origin and parallel to line 1.
Click here to see answer by Alan3354(69443)

Question 341472: Karen purchased a prepaid phone card for $15. long distance calls cost 14 cents per minute using this card. Karen used her card only once to make a long distance call. Ifthe remaing credt on her card is $12.34, how many minutes did her last call last?
Click here to see answer by edjones(8007)

Question 341557: what is the slope if it exist of (1,0) (0,-3)
Click here to see answer by stanbon(75887)

Question 341579: the perimeter of rectangle garden is 284 ft. If the lenth of the garden is 78 ft
what is its width?
will it be 64ft?
Click here to see answer by Alan3354(69443)

Question 341587: graph the line with slope -1/3 passing though the point(3,5)
Click here to see answer by mananth(16946)

Question 341585: write equations for the vertical and horizontal lines passing through the point (-5,)
Click here to see answer by Fombitz(32388)

Question 341658: find the slope of the line graph
(-6,6)(4,-7)
Click here to see answer by jim_thompson5910(35256)

Question 341666: using slope-intercept form for graphing, graph each line using its y-intercept and slopt for:
4x + 3y =9

thank you very much.
Click here to see answer by jim_thompson5910(35256)

Question 341667: complete the ordered pair so it satisfies the given equation:
y=3x + 9:(0, ),( ,24), (2, )

thank you so much
Click here to see answer by jim_thompson5910(35256)

Question 341705: Determine the slope and y intercept for the graph of 7x+4y=16
Click here to see answer by jim_thompson5910(35256)

Question 341707: Write an equation in slope-intercept form for the line through (4,5) with slope 1/2
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, 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