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

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Question 1102657: Identify and verify the values of x and y that simultaneously satisfy each pair of equations.
-x+y=3
y=-3(2x-1)

Click here to see answer by josgarithmetic(39617) About Me 

Question 1102655: Identify and verify the values of x and y that simultaneously satisfy each pair of equations.
y-4x=8
y=2(2x+4)

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Question 1102654: Identify and verify the values of x and y that simultaneously satisfy each pair of equations.
y-4x=8
y=2(2x+4)

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Question 1102666: Identify and verify the values of x and y that simultaneously satisfy each pair of equations.
-x+y=-2
y=2

Click here to see answer by Alan3354(69443) About Me 

Question 1102695: in a class 34 students , the number of girls is 3/5 of the boys. find the number of boys in the class.
Click here to see answer by ikleyn(52781) About Me 

Question 1102710: Solve the system of equation by the substitution method
x+y=20
5x+y=0

Click here to see answer by algebrahouse.com(1659) About Me 

Question 1102715: How do I convert -7x-4y=-12 into slope intercept form?
Click here to see answer by josgarithmetic(39617) About Me 

Question 1102724: What is the slope of the line through (-7,-8)(−7,−8)left parenthesis, minus, 7, comma, minus, 8, right parenthesis and (0,4)(0,4)

Click here to see answer by math_helper(2461) About Me 

Question 1102753: Solve the system of linear equation by graphing
2x+y=-1
-4x=2y-12

Click here to see answer by josgarithmetic(39617) About Me 

Question 1102767: A first number plus twice a second number is 8. Twice the first number plus the second total 35. Find the numbers
Click here to see answer by josgarithmetic(39617) About Me 
Question 1102767: A first number plus twice a second number is 8. Twice the first number plus the second total 35. Find the numbers
Click here to see answer by rothauserc(4718) About Me 

Question 1102770: x+2y=8
2x+y=35

Click here to see answer by Alan3354(69443) About Me 
Question 1102770: x+2y=8
2x+y=35

Click here to see answer by Boreal(15235) About Me 

Question 1102771: The Royal Fruit Company produces two types of fruit drinks. The first type is 35% pure fruit juice, and the second type is 100% pure fruit juice. The company is attempting to produce a fruit drink that contains 45% pure fruit juice. How many pints of each of the two existing types of drink must be used to make 260 pints of a mixture that is 45% pure fruit juice ?
Click here to see answer by josgarithmetic(39617) About Me 

Question 1102773: The Forrest Theater can seat a total of 360 people. They take in $15,150 when every seat is sold. If orchestra section tickets cost $45 and balcony cost $35, find the number of seats in the orchestra and the number of seats in the balcony.
Click here to see answer by solver91311(24713) About Me 

Question 1102783: Find the slope and y intercept of the line, and graph:
2x+3y=18
I got the slope as: -2/3
and the y intercept as: (0,6) is this correct? Also how do I graph that? Thank you!

Click here to see answer by Alan3354(69443) About Me 

Question 1102791: Determine whether the statement Is always, Sometimes, Or never true
1) Two lines with positive slopes are parallel
A) Always
B) Soemtiems
C) Never
Two lines with the same slope and different y - Intercepts are Perpendicular
A) Always
B) Sometimes
C) Never


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Question 1102801: So I have to create a parallel line using this information 2x+3y=7;(4,5) and I got 5=-2/3(4)+b and was wondering how to get from what I got to the answer y=-2/3x+33/3
Click here to see answer by josgarithmetic(39617) About Me 

Question 1102808: find solution to a linear equation in two variables.
find an order pair (x, y) that is a solution to the equation
-x+4y+4

Click here to see answer by richwmiller(17219) About Me 

Question 1102873: Solving problems involving systems of linear equations in two variables:
three years ago, rica was thrice as old as dandy. three years hence, she will be twice as old. find their present ages.

Click here to see answer by Fombitz(32388) About Me 

Question 1102898: For the linear function:f(x)=mx+b F=(-4)=17 and F=(7)=-16
Find m and b

Click here to see answer by Boreal(15235) About Me 

Question 1102904: Solve the problem using the substitution method
7x-9y=-8
3x-y=16
What is the solution set for x and y?

Click here to see answer by Alan3354(69443) About Me 
Question 1102904: Solve the problem using the substitution method
7x-9y=-8
3x-y=16
What is the solution set for x and y?

Click here to see answer by Gerwally(2) About Me 
Question 1102904: Solve the problem using the substitution method
7x-9y=-8
3x-y=16
What is the solution set for x and y?

Click here to see answer by greenestamps(13200) About Me 
Question 1102904: Solve the problem using the substitution method
7x-9y=-8
3x-y=16
What is the solution set for x and y?

Click here to see answer by ikleyn(52781) About Me 
Question 1102904: Solve the problem using the substitution method
7x-9y=-8
3x-y=16
What is the solution set for x and y?

Click here to see answer by richwmiller(17219) About Me 

Question 1102932: Rajeev,lived in a town. Has to travel 3/4 of his journey by train,1/8 by car,1/12 by cart and the remaining 4 km on foot to reach his village. How far is his village from town.
Click here to see answer by rfer(16322) About Me 

Question 1102934: A purse contains rs 250 in note of denominations of 10 and 50 . if the number of 10 rupee note is one more than 50 rupee notes. Find the number of notes each denominations.
Click here to see answer by Alan3354(69443) About Me 

Question 1102980: Emma Hodges has a jar containing 65 coins, all of which are either nickels or dimes. The total value of the cons is $5.30. How many of each does she have?
Click here to see answer by Theo(13342) About Me 

Question 1103000: Solve using the substitution method
x=8y-3
x=2y-9

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Question 1103000: Solve using the substitution method
x=8y-3
x=2y-9

Click here to see answer by rothauserc(4718) About Me 

Question 1102992: given a line whose slope, m, is -2 and passes through point (5,3) and the graph will do what?

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Question 1102907: Shriram earned the following scores on his algebra exams: 94, 73, 89, and 95. What's the lowest score he can get on his fifth exam to have an exam average of at least 90
Click here to see answer by Fombitz(32388) About Me 

Question 1102999: Solve using the substitution method
3x+7y=-33
2x-y=12

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Question 1103022: WRITING THE EQUATION OF A LINE
Why wouldnt i use order of operations in this equation? If i did the answer would be x=1 yet its 4 because the addition was applied first??
Solve for x when y is equal to 0.
y = 1/4x − 1
0 = 1/4x − 1
0 + 1 = 1/4x − 1 + 1
1 = 1/4x
4 • (1) = (1/4x) • 4
4 = x?

Click here to see answer by Alan3354(69443) About Me 

Question 1103023: Why wouldnt i use order of operations in this equation? If i did the answer would be x=1 yet its 4 because the addition was applied first??
Solve for x when y is equal to 0.
y = 1/4x - 1
0 = 1/4x - 1
0 + 1 = 1/4x - 1 + 1
1 = 1/4x
4 • (1) = (1/4x) • 4
4 = x?
==============
AL SAYS:
Not clear why you have a question.
y = (1/4)x - 1 = 0
(1/4)x - 1 = 0
(1/4)x =1
x = 4
BUT i still am confused he just stated the same problem i asked, i am confused on why the addition of one on both sides is done BEFORE the multiplication of 4 on both sides, PEMDAS or aka order of ops says multilpication b4 addition.... PLZ HELP ME!!!(:

Click here to see answer by Alan3354(69443) About Me 

Question 1103031: Write the equation of the line which passes through (1, 2) and with slope of -1/3 in standard form.
Click here to see answer by Fombitz(32388) About Me 

Question 1103025: Find an equation of the line through the points (-3,12) and is perpendicular to the x-axis.
Click here to see answer by Alan3354(69443) About Me 

Question 1103037: Determine whether the pairs of lines are parallel, perpendicular or neither
4x-y=0.5
4x+2y=1

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Question 1103193: Cindy is 9 years younger than twice Betty's age. Arron is half as old as Betty. How old is each person, if the sum of their ages is 123. How old is each person? Give ages to the nearest whole number.
Click here to see answer by Fombitz(32388) About Me 

Question 1103201: y= -3x
Click here to see answer by josgarithmetic(39617) About Me 
Question 1103201: y= -3x
Click here to see answer by ikleyn(52781) About Me 

Question 1103192: Phyllis invested 60000 dollars, a portion earning a simple interest rate of
5 percent per year and the rest earning a rate of 7 percent per year. After one year the total interest earned on these investments was
3420 dollars. How much money did she invest at each rate?

Click here to see answer by josmiceli(19441) About Me 

Question 1103219: Two number are in the ratio 8:15.if 5 added to each number the ratio become 29:35.find the ratio.
Click here to see answer by josgarithmetic(39617) About Me 

Question 1103218: a. find the corners of the feasible region.
b. find the maximum of the given objective fuction
maximize
f=3x+2y
subject to
4x+y=140
x+2y=80
x+y=50

Click here to see answer by greenestamps(13200) About Me 

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, 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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