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

Tutors Answer Your Questions about Graphs (FREE)

Question 123236: Please help me? I have two different ideas as to how to graph my problem, except I am unsure and lack confidence.
Graph y is greater than or equal to 1
Click here to see answer by ilana(307)

Question 123244: Write and equation of the line described:
Contains (4,9) and is perpendicular to the graph of y = 7x + 3/8.
Click here to see answer by stanbon(75887)

Question 123312: graph the given function
f(x)=-2x-5
please show detailed work so i understand it thank you so much
Click here to see answer by jim_thompson5910(35256)

Question 123307: solve by substitution:
x-y=4
-5x+3y=6
Click here to see answer by jim_thompson5910(35256)

Question 123307: solve by substitution:
x-y=4
-5x+3y=6
Click here to see answer by johnnico6426(16)

Question 123293: A communications company offers a variety of calling card options. Card A has a 30 cents connection fee and then costs 2 cents per minute. Card B has a 10 cents connection fee and then costs 6 cents per minute. Find the length of the call that would cost the same with both cards.
It doesn't make sense to me on how to solve it.
Click here to see answer by rajagopalan(174)

Question 123322: Mr Arnold bought 2 watches and 4 pens for $586. Mr Smith bought 1 watch and 3 pens for $361. Find the cost of the pen.
Click here to see answer by chitra(359)

Question 123367: Graph the equation x-y=6
Click here to see answer by praseenakos@yahoo.com(507)

Question 123366: Graph the equation x-y=6
Click here to see answer by praseenakos@yahoo.com(507)

Question 123410: Find the slope and y intercept of the line represented by each of the following equations.
1.y=-2x+9 2.y=-3x+8 3.3x-y=7 4.2x-y=11
Click here to see answer by Fombitz(32388)

Question 123597: Are the following lines parallel, perpendicular, or neither?
x-6y=12
6x+y=6
Click here to see answer by oscargut(2103)

Question 123633: Can someone please help me with this problem!
Graph by first solving for y.
4x � 3y = 6

Click here to see answer by praseenakos@yahoo.com(507)

Question 123705: Please help me solve this equation:
Find the y-intercept and x-intercept for the equation
2x+3y=6
Click here to see answer by Fombitz(32388)

Question 123729: Please help me solve this problem:
Find an equation of the line containing the given point and having the given slope
(_3,0), m=-2
Click here to see answer by sujanag(3)

Question 123729: Please help me solve this problem:
Find an equation of the line containing the given point and having the given slope
(_3,0), m=-2
Click here to see answer by checkley71(8403)

Question 123793: Find E x for the following set of numbers:
2, 3, 5, 6, 8, 9, 11

Click here to see answer by checkley71(8403)

Question 123809: Find the domain and range.
{(-1,-9), (-5,-10), (-4,1), (10, -6), (5,-2)}
Click here to see answer by rapaljer(4671)

Question 123810: Solve the problem.
Assume that the sales of a certain appliance dealer are approximated by a linear function. Suppose that sales were $11,000 in 1982 and $47,000 in 1987. Let x=0 represent 1982. Find the equation giving yearly sales S(x).
Click here to see answer by stanbon(75887)

Question 123716: Please help me solve this equation:
Find the slope and the y-intercept of 5y+6x=5. Then graph the equation.
Click here to see answer by nadinadan(32)

Question 123821: Find the slope of the line passing through the points (5, 11) and (1, 3).
Click here to see answer by ilana(307)

Question 123836: 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 solver91311(24713)

Question 123852: Problem- y = x+1
y = 2x-1
The question from my text book is: Solve each system of equations on the same set of axes.Tell whether the system is consistent or inconsistent and whether the equation are dependent or independent.
I'm trying to solve this by using the y=mx+b formula.Is this the correct formula to use?
Click here to see answer by solver91311(24713)

Question 123892: Mrs Lee bought 40 fun fair coupons. Some of the coupons were worth $2 and the rest were worth $5. The total value of all the coupons was $146. How many $5 coupons did Mrs Lee buy?
Click here to see answer by bucky(2189)

Question 123790: A line passing through (�6, �5) and (�1, y) is perpendicular to a line with slope -5/13 . Find the value of y
Click here to see answer by ankor@dixie-net.com(22740)

Question 123997: im lost again. the instructions say to graph each equation. the problem is
y=4
how do i graph the equation if there is no x?
Click here to see answer by checkley71(8403)

Question 124016: It states to solve system by graphing. Then it said to idenitfy the system as consistent or inconsistent. Also identify if it is dependent or independent. My question is how do you know when the final answer is consistent, inconsistent, dependent, or independent.
The problem I have is: -2x+y=3
6x-3y=-9 Which the answer is y=2x+3. But I don't know if it is consistent or ect.
The other problem I have is x=4+y
3y=-3x Which the answer would be (2,-2) and again how would I know if it is inconsistent or ect.
Thanks for your time

Click here to see answer by solver91311(24713)

Question 124022:
Solve
graph:
Click here to see answer by checkley71(8403)

Question 124035: if you were graghing y-2x using the slope and the intercept where would you start?

Click here to see answer by checkley71(8403)

Question 123888: Ryan has 10-cent coins, 20-cent coins and 50-cent coins in his coin bank. 46 of them are not 20-cent coins, 54 of the coins are not 50-cent coins. The total number of 50-cent coins and 20-cent coins are 40. Find the total value of all the coins in his coin bank.

Click here to see answer by ankor@dixie-net.com(22740)

Question 124258: Graph the function y=F(x)=x^2
Click here to see answer by MathLover1(20849)

Question 124277: Evaluate
If f(x) = (x-6)^2, find f(-4)
Click here to see answer by ganesh(20)

Question 124280: Find the domain and range

Click here to see answer by Fombitz(32388)

Question 124300: Graph the pair of functions on the same plane. Use a dashed line for g(x).
f(x) = x^2, g(x) = x^2-4
Click here to see answer by stanbon(75887)

Question 124080: include systems of equations for solving
Adult tickets for a play cost $14 and child tickets cost $3. If there were 26 people at a performance and the theater collected $199 from tickets, how many adults and how many children attended the play?
Click here to see answer by ankor@dixie-net.com(22740)

Question 124079: include systems of equations for solving
Sally bought three chololate bars and a pack of gum and paid $1.75. Jake bought two chocolate bars and four packs of gum and paid $2.00.
Find the cost of a chocolate bar and the cost of a pack of gum.
Click here to see answer by ankor@dixie-net.com(22740)

Question 124334: why is the line x=4 a vertical line?
Click here to see answer by stanbon(75887)

Question 124278: Graph the equation by plotting ordered pairs of numbers.
2x = y+1
Click here to see answer by iluvbuilding429(41)

Question 124371: Can someone please help me?
Solve the system by graphing.
x � y = 5
x + y = 3

Click here to see answer by MathLover1(20849)

Question 124382: Graph the solution to the inequality │y � 1│< 2
Click here to see answer by jim_thompson5910(35256)

Question 124330: . For a 2-day rental, a rental car agency charges a $40 fee per day plus $0.35 per mile.
The equation represents this model, where C symbolizes the total cost of
the rental, and x stands for the number of miles driven.
A. Find the y-intercept of this graph and explain what it means in the context of the problem. Show all work to receive full credit.
B. Explain the slope of the line within the context of this problem.
C. Graph the equation.

Click here to see answer by anne(47)

Question 124401: Graph each of the following inequalities
1. x � y ≥ 4

Click here to see answer by jim_thompson5910(35256)

Question 124402: Graph each of the following inequalities

2. 4x + 3y > 12

Click here to see answer by jim_thompson5910(35256)

Question 124404: Evaluate each function for the value specified
3. f (x) = -2x^3 + 5x^2 - x - 1; find

(a) f (-1), (b) f (0), and (c) f (2).

Click here to see answer by jim_thompson5910(35256)

Question 124405: Evaluate each function for the value specified

4. f (x)= x^3 + 2x^2 - 7x+ 9; find

(a) f (-2), (b) f (0), and (c) f (2).

Click here to see answer by jim_thompson5910(35256)

Question 124407: Solve each of the following systems by graphing.
5.
x � y = 8
x + y = 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