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

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Question 148044: What is the equation of Y when (4,9); x+7y=6?
Click here to see answer by Alan3354(69443)

Question 148085: I am having trouble starting off with this equation. I don't want the answer. I just need to understand how to set the problem up. The problem is graph 6x + 8= 4x-2y. This is what i think i need to do first. I think you have to replace x with a number, but what is throwing me off is the y that was added in. Thank you for your help.
Click here to see answer by stanbon(75887)

Question 147792: Graph the inequality:
6x + 4y ≤ 24

Click here to see answer by mangopeeler07(462)

Question 148151: Please help me calculate the value of the discriminant of and part b of that question is By examining the sign of the discriminant in part a, how many x-intercepts would the graph of have? and why?
Click here to see answer by Alan3354(69443)

Question 148143: I don't understand slope and m x +b and all that... how do you solve it because i have the TAkZ test comiN up on wedsnday! PLz
Click here to see answer by jim_thompson5910(35256)

Question 148190: Graph and Solve:
equation: y=3x-5
3points:
Slope:
x intercept:
y intercept:
Click here to see answer by mangopeeler07(462)

Question 148193: Graph and Solve:
equation: 5x+3y=30
3 points:
slope:
x intercept:
y intercept:
Click here to see answer by mangopeeler07(462)

Question 148193: Graph and Solve:
equation: 5x+3y=30
3 points:
slope:
x intercept:
y intercept:
Click here to see answer by josmiceli(19441)

Question 148196: 20) Find the slope and the y-intercept.
y = 4x + 2
Can someone please help.
v/r
Jess
Click here to see answer by mangopeeler07(462)

Question 148196: 20) Find the slope and the y-intercept.
y = 4x + 2
Can someone please help.
v/r
Jess
Click here to see answer by jim_thompson5910(35256)

Question 148196: 20) Find the slope and the y-intercept.
y = 4x + 2
Can someone please help.
v/r
Jess
Click here to see answer by josmiceli(19441)

Question 148203: graph 3x+4=x-6
Click here to see answer by mangopeeler07(462)

Question 148220: 31. e^ln(3) =
s. 1
b. 2
c. 0
d. e
Can someone help me out with this?
Eddie

Click here to see answer by Alan3354(69443)

Question 148220: 31. e^ln(3) =
s. 1
b. 2
c. 0
d. e
Can someone help me out with this?
Eddie

Click here to see answer by jim_thompson5910(35256)

Question 148226: 44. Find the slope of the line passing through the points (18, 11) and (9, 2).
Can someone help me with this one?
Eddie
Click here to see answer by Earlsdon(6294)

Question 148248: a) what is the slpe of any line that is parallel to the line through (-3,-4) and (5,-1)
b) what is the slope of a line that is perpendicular to the line through (5,4) and (5,-2)
Click here to see answer by mangopeeler07(462)

Question 148244: Find an equation of the line that goes through (1,3) and is perpendicular to the line through (0,8) and (-2,0)
Click here to see answer by mangopeeler07(462)

Question 148234: Use point-slope form to determine the equation of the line passing through the two given points. Then write the equation in slope-intercept form.
(3,1), (1,-15)
Click here to see answer by Alan3354(69443)

Question 147933: Use the echelon method to solve
x + y + z = 2
2x + y - z =5
x - y + z = -2
Click here to see answer by Alan3354(69443)

Question 148294: Hello. I ran across a problem that left me baffled. It is not a hard one but I just did not retain it whe nI learned algebra if I learned it at all. Here goes:
The constraint 5x+2y<=0 passes through (20,50), (10,0), (20,0), (0,-5). Why and how?
Also, the constraint 2x-3y>=0 passes through (10,50), (30, 20), (0, 30) (-10, 0)
Why and how?
Click here to see answer by stanbon(75887)

Question 148321: COULD SOME ONE HELP? SOLVE EACH SYSTEM OF SIMULTANEOUS EQUATIONS BY USING THE LINEAR COMBINATIONS METHOD. 1. 9x+3y=33 5x-y=13 solution 2. x+3y=6 2x-3y=9 solution 3. 11x-5y=4 16x=20+12y solution
Click here to see answer by stanbon(75887)

Question 148333: James bought x books at $40 each and y magazines at $55 each.If the reading materials cost $150 altogether,find the values of x and y.
Click here to see answer by Alan3354(69443)

Question 148371: 9-2m/7=19
Click here to see answer by mangopeeler07(462)

Question 148372: 3(x-0.87)-2x=4.98
Click here to see answer by mangopeeler07(462)

Question 148424: r+t/2=7 ;t
Twice the sum of 3 consecutive number odd integers is 150. Find the 3 integers.
I know you start off the problem like this.
x+x+2+x+4=150
then I get 3x+6=150
then 3x=154
... I'm not sure where I went or if I went wrong.

Click here to see answer by scott8148(6628)

Question 148459: I NEED HELP COULD ANYONE SHOW ME HOW THESE ARE DONE? QUESTION READS FIND THE EQUATION OF THE LINE DETERMINED BY THE GIVEN INFORMATION. 1. M=1; P=(-7,0) 2. P1=(4,-5); P2=(11,2) 3. P1=(0,6); P2=(-2,3) 4. M=2; P=(0,1)
Click here to see answer by stanbon(75887)

Question 148507: im having trouble with these can someone help. determine from the slopes and y-intercepts of the two lines whether the linear equations that name those lines are inconsistent,consistant,or dependent. if the equations are consistant,find the common solutionof that system of equations. 1. y=5x+3 5x-y=7 2. 3x-2y=5 2y=3x+7 3. x-3y=13 3x=9y+39 4. x+4/5y=4 x-1/2y=-9
Click here to see answer by mangopeeler07(462)

Question 148373: 1/2q-6=1/5q
Click here to see answer by checkley77(12844)

Question 148370: v-4(4-v)=-2(2v-1)
Click here to see answer by checkley77(12844)

Question 148574: The second angle of a triangle is 3times the first and third is the 12 less than twice the first . Find the measure if the angles .
Click here to see answer by aswathytony(47)

Question 148585: how do i get the equation in slope intercept form if (-1,4) : m=2/3
Click here to see answer by mangopeeler07(462)

Question 148585: how do i get the equation in slope intercept form if (-1,4) : m=2/3
Click here to see answer by stanbon(75887)

Question 148591: -7x+y=20
9x-3y=36
Click here to see answer by Fombitz(32388)

Question 148601: How would you find the slope for this equation? 6x+2y+8=0
Click here to see answer by mangopeeler07(462)

Question 148622: I CAN USE SOME HELP . FIND THE SLOPE OF THE LINECONTAINING THE TWO GIVEN POINTS. PLEASE HELP 1. (5,9) (8,0) m= 2. (0,-4) (3,-3 m= 3. (1,5) (-1,-5) m= 4. (6,4) (11,5) m=
Click here to see answer by vleith(2983)

Question 148641: Suppose you want to cover the backyard with decorative rock and plant some trees as the first phase of the project. You need 30 tons of rock to cover the area. If each ton cost $60 and each tree is $84, what is the maximum number of trees you can buy with a budget for rock and trees of $2,500?
Click here to see answer by mangopeeler07(462)

Question 148620: can any one help me find the slope for each line? 1. y= -3/4+7 m= 2. x=y m= 3. 3x-8y=4 m=
Click here to see answer by Alan3354(69443)

Question 148746: find the y-intercept for 7x+2y=28

Click here to see answer by stanbon(75887)

Question 148590: -7x+y=20
9x-3y=36
Click here to see answer by Fombitz(32388)

Question 148783: 4y+3x=-3
y=5x-5
linear equations by substitution method
Click here to see answer by oscargut(2103)

Question 148848: (-3,0)(0,3) find the slope of this line
Click here to see answer by jim_thompson5910(35256)

Question 148926: x-5y= -1
( ,-2)(4, )
Click here to see answer by stanbon(75887)

Question 148956: For the equation 3x = -6 what is the slope. I think it's undefined because I divided -3x by -3.
Click here to see answer by mangopeeler07(462)

Question 148959: how do you find out the slope of a line with the equation 2x+3y+6=0?
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, 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, 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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