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

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Question 208600: Would you please help me solve this graphing problem?
Solve graphically
4x+y= -3
4x+2y=2
Thank you!!
Click here to see answer by Theo(13342)

Question 208503: a triangle with vertices A(-3,4), B(3,1),and C(-1,-5) is rotated 90 degrees counterclockwise about the origin.find the coordinates of A,B,and C.
A) A(-3,-4), B(3,-1), C(-1,5)
B) A(3,-4), B(-3,-1), C(1,5)
C) A(4,3), B(1,-3), C(-5,1)
D) A(-4,-3), B(-1,3), C(5,-1)
Click here to see answer by Edwin McCravy(20055)

Question 208749: solve algebraically: 6x-3y+8z=4
-x+9y-2z=2
4x+6y-4z=3

A)(5/2, 5/3, -3/4)
B)(1, -2, -1)
C)(1/2, 1/3, 1/4)
D)(5, -2, 5/4)
Click here to see answer by stanbon(75887)

Question 208753: Given the function y=8-2x, complete the following:
y is____when x is -4
y is ____when x is -2
y is____when x is 0
y is ____when x is 2
y is ____when x is 4
Calculate the slope of the function
Click here to see answer by stanbon(75887)

Question 208750: the graph of the equation y=x cubed -x is symmetric with respect to which of the following?
A)the x-axis
B)the y-axis
C)the origin
D)none of these

Click here to see answer by stanbon(75887)

Question 208757: if the graph of a function is symmetric about the origin,which of the following must be true?
A)f(x)=f(-x)
B)f(-x)=-f(x)
C)f(x)=[f(x)]
D)f(x)=1/f(x)
Click here to see answer by stanbon(75887)

Question 208759: the graph of an odd function is symmetric with respect to which of the following?
A) the x-axis
B)the y-axis
C)the line y=x
D)none of these
Click here to see answer by stanbon(75887)

Question 208779: which is true for the graph of f(x)=-x cubed + 3x-2?
A)relative maximum at (1,0)
B)relative minimum at (1,0)
C)relative maximum at (-1,-4)
D)relative minimum at(0,-2)
Click here to see answer by stanbon(75887)

Question 208781: if y varies jointly as x and the cube of z, and y=378 when x=4 and z=3, find y when x=9 and z=2.
A)y=283.5
B)y=84
C)y=567
D)y=252
Click here to see answer by stanbon(75887)

Question 208776: chose the statement that is true for the graph f(x)=x cubed -12x.
A)f(x) increases for x>-2
B)f(x) decreases for x>-2
C)f(x) increases for x>2
D)f(x) decreases for x<2
Click here to see answer by Edwin McCravy(20055)

Question 208748: which product represents the solution to the system: -y+7x=14
-x+4y=1

Click here to see answer by checkley77(12844)

Question 208832: -4(3+x)+5=4(x+3)
Click here to see answer by rfer(16322)

Question 208884: I need assistance to try and understand how to come up with the equation to describe the rule(x,y) for (-1,-7),(0,-3),(1,1),(2,5),(4,13),(5,17)
Currently I was advised the answer is y=4x-3 , but I need to have a full understanding or a break down of how the answer was arrived.
Thanks!
Click here to see answer by stanbon(75887)

Question 208946: what are the points for x and y if you are graphing the equation x-4y=2
Click here to see answer by stanbon(75887)

Question 208956: how would you graph x=3,y=-1,and2x-2y=0 on a coordinate plane
Click here to see answer by stanbon(75887)

Question 208602: I am stuck on this algebra. Any help would be appreciated...
Graph f(x) = x^2+2x-6
What is the vertex? Coordinate pair.
What is the line of symmetry? x=
Is it max or min?
I don't have this chapter in my book I am using.
Click here to see answer by RAY100(1637)

Question 209019: find 2A-B if
A=
[6 -3]
[1 -2]
B=
[-4 -1]
[2 5]
Answers:
a)
[10 -2]
[-1 -7]
b)
[16 -5]
[0 -9]
c)
[20 -4]
[-2 -14]
d)
[8 -7]
[4 1]

Click here to see answer by Edwin McCravy(20055)

Question 209062: 2y=x+4 need the slope and intersection
Click here to see answer by nerdybill(7384)

Question 209099: I have to put this in general form. But I am totally confused. I have no idea where A,B, and C come from. Please help me! I would really appreciate it!
General Form - Ax+By+C=0
Point (0,-2) Slope m=3 When I put this in general form from slope intercept form I got the right answer:
y=3x-2
minus y on each side
3x-y-2
However on the next one Point (2,-3) Slope m=-(1/2) I did the same thing and it was wrong please help.
y=-(1/2)x-2
-(1/2)x-y-2=0
I got the exact opposite of the right answer.
Why do you sometimes move everything over to the y as in the second problem but others times move it all over on the other side as in the first problem!?
Click here to see answer by scott8148(6628)

Question 209115: Hmm, I'm having a very hard time with this question.
2z+z-9>30
This is what I think. By getting the negative nine to the other side. Lol, I mean like this.
2z+z-9(+9)>30(+9)
2z+z>39
Then since the variable has its own number as in one, it would go like this?--
3z>39
Then after that I'm not sure what do
If you help, I will be very thankful < D Thank you! :]

Click here to see answer by scott8148(6628)

Question 209079: write the standard form of the equation of the line that passes through (5,-2)
and is parallel to the line with equation 3x+2y+4=0
Click here to see answer by scott8148(6628)

Question 209130: 5+x =5
2
Click here to see answer by stanbon(75887)

Question 209036: write the polynomial equation of least degree that has the roots: -3i,3i,i, and -i.
Click here to see answer by Alan3354(69443)

Question 209136: I don't really get this : | I tried every way but I see no answer
15<-5(x+1)
thank you for helping :]
Click here to see answer by rfer(16322)

Question 209136: I don't really get this : | I tried every way but I see no answer
15<-5(x+1)
thank you for helping :]
Click here to see answer by MathTherapy(10552)

Question 209145: Please help. The {>} sign was suppose to be a greater than or equel sign.
-(x-4)>11
Thank you
Click here to see answer by stanbon(75887)

Question 209153: I am suppose to find the slope-intercept form ofthe equation of the line that passes through the points.
Points (-8,1) (-8,7)
This is what I did.
m=(7-1)/(-8--8)
=-6/0
So the slop is undefined or vertical. So I assumed the answer was x=6. However, the correct answer was x+8=0. How is that slope intercept form? And how did you arrive at that solution. Please help. It would be greatly appreciated!
Click here to see answer by Alan3354(69443)

Question 209171: 3x-4y=-9
-x-4y=-13
Click here to see answer by stanbon(75887)

Question 209150: Please help! {{ w/-2 is a fraction}}
9-w/-2>-15
Thank you :]
Click here to see answer by rfer(16322)

Question 209150: Please help! {{ w/-2 is a fraction}}
9-w/-2>-15
Thank you :]
Click here to see answer by MathTherapy(10552)

Question 209239: I was asked to describe what the graph of interval (-4,10) looks like?

Click here to see answer by stanbon(75887)

Question 209077: find the minumum value of f(x,y)=2x-y+2 for the polygonal convex set determined by this system of inequalities:x>=1, x<=3, y>=0, 1/2x + y<=5.
A)0
B)-3
C)3
D)-0.5
Click here to see answer by RAY100(1637)

Question 209292: what is the equation 3x-6y=5 in slope intercept form

Click here to see answer by Earlsdon(6294)

Question 209298: If the line passing through the points (a,1) and (4,7) is parrallel to the line passing through the points (3,10) and (a+4,3) what is the value of a?
Click here to see answer by stanbon(75887)

Question 209375: Graph the equation x = -1

Click here to see answer by stanbon(75887)

Question 209387: Multiply: leave answer in scientific notation
(4.0 * 10^-3)(3.0 * 10^-8)(2.0 * 10^4)
Click here to see answer by MathTherapy(10552)

Question 209396: Admiral Al needs a ramp to perform a stunt at the Arlington High School pep rally. For the first 20 feet along the ground, the ramp must rise off of the ground at a constant rate. After the construction crew had finished 5 feet of the horizontal distance, the track is 4 feet off the ground. After 20 feet of horizontal distance is constructed, Admiral Al needs to clear a 12 foot high barrier. Will he be able to do it?
Click here to see answer by stanbon(75887)

Question 209394: Baden loans $100 to Kailey who pays it back at a rate of $10 per week. The amount of money that is owed to Baden by Kailey is a linear function of time. What is the slope? Include units.
Click here to see answer by stanbon(75887)

Question 209382: graph the line please
2x - 3y = -6
Click here to see answer by Theo(13342)

Question 209422: I am having a problem with solving the word equations. Im not sure of how to write them out.
This is one I have to solve:
Find three consecutive even integers such that eight times the sum of the first two integers is eight more than twelve times the third integer.
This is what I wrote out but I don't believe it is right:
8(x+x)=8 + 12(x+3)
Click here to see answer by RAY100(1637)

Question 209426: Could you please assist me with this? I am having difficulty. Your help is very much appreciated.
Media services charges $20 for a phone and $30/month for its economy plan.The equation c=30t+20 describes the total cost, c, of operating a Media Services phone for 1 month.
The total cost for 4 months of service is $__________
If a customer has only $90 available, how many months of servie can she receive?
3___, 2 1/3 ____, 2 1/2___, 2____. Then, graph the equation c+30t+20 = total cost
Click here to see answer by stanbon(75887)

Question 209039: solve the equation by graphing: 3x-5y=-8
x+2y=1
Click here to see answer by checkley77(12844)

Question 209061: Determine whether the points lie on a straight line
A(5, 1, 3), B(7, 9, -1), C(1, -15, 11)
Click here to see answer by Alan3354(69443)

Question 209043: find the equation of the slant asymptote for the graph of
y= x^3 - 4x^2 + 2x -5 / x^2 +2
A)y=x-4
B)y=x+1
C)y=x
D)y=1
Click here to see answer by stanbon(75887)

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