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

Tutors Answer Your Questions about Graphs (FREE)

Question 305820: Find the # of square units contained in the region bordered by the graphs of the functions y=3x, x=3y, 3x+y=30?
Click here to see answer by Fombitz(32388)

Question 305820: Find the # of square units contained in the region bordered by the graphs of the functions y=3x, x=3y, 3x+y=30?
Click here to see answer by CharlesG2(834)

Question 305916: What is the slope of 4x - y + 3 = 0
Click here to see answer by richwmiller(17219)

Question 305984: Ok guys these graphs are really getting to me :(
My new question today is Graph the equation -2.2x+3.9y=-7.8 and -2.7x + 0.9y =7.3
I NEED TO FIND THEIR EXACT INTERSECTION!
NO matter how many times I try and answer it myself it is wrong!
Click here to see answer by JBarnum(2146)

Question 306156: What is the y-coordinate of the point of intersection for x - y = 9 and x + 6y = -12?
Click here to see answer by stanbon(75887)

Question 306155: What is the x-coordinate of the point of intersection for y = x - 2 and 4x + 4y = 8?
Click here to see answer by Fombitz(32388)

Question 306174: i have found the y intercept and the vertex for the following equation however my graph is supposedly not right. My graders are saying it should open upside down and mine opens upward. so where am i messing up? my yintercept is 0,-5 and vertex is -1,-2. equation is y=-3x^2-6x-5
Click here to see answer by Fombitz(32388)

Question 306180: can you tell me if I'm correct
what is the x and y intercept?
y=1/4x-24
(6,0)(0,-24)
thanks
Click here to see answer by themathtutor2009(81)

Question 306228: How would you graph y>-3x+1 and what would you call this?
Click here to see answer by Fombitz(32388)

Question 306459: parallel perpendicular or neither
-2x+4y=8
2x+4y=2
Click here to see answer by richwmiller(17219)

Question 306589: Given the function defined by t(x) = x^3 � 3x^2 � 3, find the following
t(-1)

Can anyone explain how this is done?
Click here to see answer by themathtutor2009(81)

Question 306587: find the solution to the system by the addition method. Check your answers.
4x � 5t = 18
6x +10t =(-8)

Click here to see answer by mananth(16946)

Question 306587: find the solution to the system by the addition method. Check your answers.
4x � 5t = 18
6x +10t =(-8)

Click here to see answer by MathTherapy(10552)

Question 306592: Find an equation of the line satisfying the conditions given. Express your answer in standard form.
Parallel to 3x � y = (-5) and passing through (-1, 0)
is 9x +y = -3 the right answer? That's what I got but I really have no idea what I am doing.
Click here to see answer by Fombitz(32388)

Question 306684: Ok I need another intersection again.
For graph the inequalities 9x+8y<72 ans -7x-44<=28
I need to know what their intersection numbers are on the graph! I cannot figure it out!
Help Please!
Click here to see answer by stanbon(75887)

Question 306846: which is a solution of the inequality 1/2x - 4y < 4
Click here to see answer by texttutoring(324)

Question 306846: which is a solution of the inequality 1/2x - 4y < 4
Click here to see answer by JBarnum(2146)

Question 306831: im given two points (-2/5,2/5) and (4/3,2/3) put into slope intercept form? and standard form?

Click here to see answer by Fombitz(32388)

Question 306928: what is the relationship between lines y=2x-7 and y=1/2x-2
parallel
perpendicular
neither
thankyou
Click here to see answer by themathtutor2009(81)

Question 306932: What is the relationship between the lines y=-1/4x+15 and y=4x-17
thank you
Click here to see answer by richwmiller(17219)

Question 306998: which graph represents 3x+4y=-20?

Click here to see answer by Fombitz(32388)

Question 307095: 3-1/4y=6x I need the slope and the y intercept
Click here to see answer by rfer(16322)

Question 307155: Graph: y=square root of x+8 -2
Click here to see answer by Fombitz(32388)

Question 307154: Graph:
y=2/3 times 4^x
Click here to see answer by Fombitz(32388)

Question 307212: y=4x2-5x-1 What direction would the graph of this equation face?
Click here to see answer by jim_thompson5910(35256)

Question 307345: where does the graph of y=4x-7 cross the y axis?
Click here to see answer by Alan3354(69443)

Question 307367: So lets say I have the equation:
y = -8 - 4
How do I graph that? I get that the y-intercept is 4, but how do I do x? Please explain what I do and why I do it.
Click here to see answer by checkley77(12844)

Question 307408: given this linear equation y=0.15x+0.79 what is the slope or rate of exchange and what would the y-intercept be and what does it represent.?
Click here to see answer by rapaljer(4671)

Question 307412: I was reviewing the quadratic equation y=-3x^2-6x-5 for problem #252391. I had already found that if x=0 then y=-5. I'm having trouble creating a table of ordered pairs to use in graphing using excel. I would think I need at least 3 sets of ordered pairs to be able to do this. Can someone show me what other pairs to use and how they were figured. I want to understand this, I'm not very good at these equations. Thanks!
Click here to see answer by jim_thompson5910(35256)

Question 307695: How do you write an equation in standard form of the line with these given characteristics:
passes through (-2,2) and (3,6)
Click here to see answer by Alan3354(69443)

Question 307639: Given one point on the graph (0, -11) and the slope, m = -2, develop an equation in the slope-intercept format
Click here to see answer by checkley77(12844)

Question 307717: I don't know how to sketch a graph and find three ordered pairs that satisfy the equation : y=2x-6
Click here to see answer by Alan3354(69443)

Question 307742: Graph the line with slope of 2 passing through the point (2,-5)
Click here to see answer by Alan3354(69443)

Question 307820: write an equation of the line containing the given point and parallel to the given line. Express your answer in the form y=mx+b
(-3,6);4x=9y+8
The equation of the line is Y=
Click here to see answer by mananth(16946)

Question 307996: Find the slope of the line 3x-4y=1
Click here to see answer by Fombitz(32388)

Question 307997: A line passes through the point (-5,-7) and has a slope of 3. Write the equation for this line.
Click here to see answer by Fombitz(32388)

Question 308097: i need to find x and y-intercepts for:
x+y=10
Click here to see answer by rapaljer(4671)

Question 308363: Consider the equation f(x)=x^2+6x+4
Find the x-intercepts by completing the square.
Find the vertex
Find the axis of symmetry
I tried working out this problem 3 times and i can not solve it. My teacher said that when i find the x-intercepts that i should leave my answer in square roots rather than the decimal approximations.
Click here to see answer by scott8148(6628)

Question 308420: Is (4, 5) a solution to this system of equations?
2x + 3y = 23
y + x = 9
Click here to see answer by Fombitz(32388)

Question 308420: Is (4, 5) a solution to this system of equations?
2x + 3y = 23
y + x = 9
Click here to see answer by texttutoring(324)

Question 308533: y=9x-10
y=-4x+18
I dont know the first step to solving this!
I am supposed to solve by graphing
Click here to see answer by Alan3354(69443)

Question 308537: Y = x - 1/2
What is the slope and Y intercept?

Click here to see answer by rapaljer(4671)

Question 308729: Solve each of the following inequalities and graph the solution
y-3>=5
I guess that this needs a solution set, not y>=8, and I don't really know how to get a solution set, I have a number of other problems of this sort, so if someone could please explain how to get a solution set I'd be most thankful
Click here to see answer by rapaljer(4671)

Question 308741: I need help with this question. I am so lost!!
Graph the following equation and identify the y-intercept of y=x+3?
Click here to see answer by Fombitz(32388)

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, 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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