Questions on Algebra: Graphs, graphing equations and inequalities answered by real tutors!

Tutors Answer Your Questions about Graphs (FREE)

Question 110540: solve the system by substitution.
3x - 3y = -12
y = -3x - 12
Click here to see answer by jim_thompson5910(35256)

Question 110602: solve and graph the solution set.
3(x-4)>7x-9
Click here to see answer by jim_thompson5910(35256)

Question 110809: How do you graph f(x)=(x+5)^3
Click here to see answer by jim_thompson5910(35256)

Question 110797: Solve.
The length of a rectangle is 8 in. more than twice its width. If the perimeter of the rectangle is 34 in., find the width of the rectangle.
Click here to see answer by checkley71(8403)

Question 110720: Graph y=-2/3x
Click here to see answer by checkley71(8403)

Question 110538: The length of a rectangle is 8 in. more than twice its width. If the perimeter of the rectangle is 34 in., find the width of the rectangle.
Click here to see answer by elima(1433)

Question 110524: Adult tickets for a play cost $13 and child tickets cost $10. If there were 22 people at a performance and the theater collected $277 from ticket sales, how many adults and how many children attended the play?
Click here to see answer by elima(1433)

Question 110751: Please help.
Business and finance. The cost of producing a number of items x is given by
C = mx + b in which b is the fixed cost and m is the variable cost (the cost of
producing one more item).
a). If the fixed cost is $40 and the variable
cost is $10, write the cost equation.
(b). Graph the cost equation
Thanks
JMS

Click here to see answer by edjones(8007)

Question 110902: HElp
f(x)=-2x(cubed)+5x(squared)-x-1
find (a)f(-1), (b)f(0), and (c)f(2)
thanks
Heather
Click here to see answer by jim_thompson5910(35256)

Question 110697: graph the system of inequalities
1x+2y=80
x+y<60
Please help with this.
Click here to see answer by elima(1433)

Question 110885: y=x+1
y+3=x
Click here to see answer by elima(1433)

Question 110716: I just wanted to be sure I graphed this problem correctly.

Graph points A(-3,2), B(4,0), C(0,-2), D (-3,-1)

Thank you
Click here to see answer by elima(1433)

Question 110984: x-y=9
x+y=-5
Click here to see answer by stanbon(75887)

Question 111013: A pilot plans to make a round trip flight lasting 2.5 hours. How far can the pilot plan to go if the rate going is 480km per hour and the rate returning is 320km per hour?

Click here to see answer by checkley71(8403)

Question 111175: Rewrite the equation 2x � 9y = �72 as a function of x
Please HELP!
Click here to see answer by dolly(163)

Question 111207: graphing linear equation y=5/4 x & graphing linear equation 2y-5x=-2
Click here to see answer by checkley71(8403)

Question 111193: Please help. Im lost on this problem.
1. Graph the following equations.
A. y = 4/5(x) - 7
Graph: B. -3y + 12x = 18
Graph:

Click here to see answer by checkley71(8403)

Question 111309: complete order pair for 2x+y=10
(5, )( ,10)( ,-2)(0, )
Click here to see answer by elima(1433)

Question 111279: find slop and y intercept for y=5x
Click here to see answer by elima(1433)

Question 111364: Solve the system of equations to find the point they intersect.
3x-6y=9
x-2y=3

Click here to see answer by jim_thompson5910(35256)

Question 111366: Find values for m and b in the following system so that the solution to the system is (-3, 4).
5x + 7y = b
mx + y = 22
How would you go about finding this?

Click here to see answer by jim_thompson5910(35256)

Question 111363: Solve each of the following systems by graphing.
x-2y=8
3x-2y=12
I need to see this worked out.
I know I need to convert to slope intercept form. So the first one I would do
x-2y=8
-x -x
-2y= -x+8
divide by -2 on both sides
y= x/2 + 4 SO I would start at the plot 0,4, then plot over 2 and up 1, so 2,5??
Then 3x-2y=12
-3x -3x
-2y= -3x + 12
divide by neg. 2 on both sides
y= 3/2x - 6
so the second set of points would be (0, -6), and (2,3)?
Is that correct, and then find the point they intercept which would be never?

Click here to see answer by jim_thompson5910(35256)

Question 111280: order pair solution for x-y=4
Click here to see answer by jim_thompson5910(35256)

Question 111275: 3x+y=3
Click here to see answer by jim_thompson5910(35256)

Question 111431: Graph x + y = �2.
Click here to see answer by jim_thompson5910(35256)

Question 111435: A line passing through (4, 20) and (6, y) is parallel to a line with slope �7. What is the value of y?
Click here to see answer by jim_thompson5910(35256)

Question 111429: Solve.
An 800 g solution of acid and water contains 128 g of acid. What percent of the solution is acid?
Click here to see answer by edjones(8007)

Question 111468: Given: In triangle ABC, angle B = 120
Proven: angel A (equal sign with a line through it) 60 degrees
Plan: Use an indirect poof.
(write the proof using the paragraph method) I am totally lost here, could someone help me? That�s my problem with algebra; it all looks like Chinese to me. lol

Click here to see answer by MathLover1(20849)

Question 111462: What is the slope of the line passing through the points (9,2) and (0,0)?
Click here to see answer by jim_thompson5910(35256)

Question 111476: I need to graph these linear equations the more i try the more i get confussed.

y=5x-2

3x-1=5x-y
y=[x]+3

x+2=2x-1 thank you very much
Click here to see answer by BrittanyM(80)

Question 111509: Graph y =-x
Click here to see answer by checkley71(8403)

Question 111512: rewrite each equation as a function of x.
-3x +4y = 11
Click here to see answer by checkley71(8403)

Question 111514: graph the function
f(x)=-2x - 5
Click here to see answer by checkley71(8403)

Question 111515: if f(x)=4x-3, find the following
f(-1)
Click here to see answer by checkley71(8403)

Question 111510: evaluate each function for the value specified
f (x) = x2 - 7x + 10; find (a) f (0), (b) f (5), and (c) f (-2).
Click here to see answer by checkley71(8403)

Question 111528: Please help.
I worked out the equation listed below using the slope and y-intercept for
Slope; -3/4; y-intercept (0,8) (I need to see a graph please)
Please graph the following equation y= (-3/4)x+8
Thanks
JMS

Click here to see answer by stanbon(75887)

Question 111448: A line passing through (11, 3) and (10, y) is parallel to a line with slope �2. What is the value of y?
Click here to see answer by elima(1433)

Question 111440: A home-based company produces both hand-knitted scarves and sweaters. The scarves take 2 hours of labor to produce, and the sweaters take 14 hours. The labor available is limited to 40 hours per week, and the total production capacity is 5 items per week. Write a system of inequalities representing this situation, where x is the number of scarves and y is the number of sweaters. Then graph the system of inequalities.
Click here to see answer by elima(1433)

Question 111505: This is over my head! WOOSH!
Solve the following system of linear inequalities graphically.
3x-y=<6
x=>1
y=<3
Click here to see answer by jim_thompson5910(35256)

Question 111517: if f(x) =5x - 1, find the following
f(a-2)
Click here to see answer by Fombitz(32388)

Question 111465: Please help by solving the follwoing problem so I can compare your answer to my answer to determine if I am correct.
In exercise 8 we have graphed the boundry line for the linear inequality.
Determine the correct half-plane and complete the graph.
Thanks for your help.
JMS
Click here to see answer by elima(1433)

Question 111520: Number problems. You have at least $30 in change in your drawer, consisting of
dimes and quarters. Write an inequality that shows the different number of coins in your drawer.
Click here to see answer by elima(1433)

Question 111670: i need help.
use the graph of y=-x^2+4x+5 to answer the following. all these are under 1 question.
1.using the graph, what are the solution(s)to the equation -x^2+4x+5=0?
2.Does the fuction have a maximum or a minimum?
3.what are the coordinates of the vertex in (x,y)form?
4.what is the equation of the line of symmetry for this graph?
Click here to see answer by Earlsdon(6294)

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