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

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Question 1171607: Se a equação da reta é Y = 2x - 2, então f(4) é?
Click here to see answer by Boreal(15235)

Question 1171619: 2x+3y-z=-4
solve for x
-x+2y+3z=5
solve for y
4x-y+2z+22
solve for z
Click here to see answer by ikleyn(52781)

Question 1171667: write the equation of a line that has a slope of -2 and passes through the point (3,9)
Click here to see answer by greenestamps(13200)

Question 1171686: What is an equation of the line that passes through the points (8, -8) and (1, 6)?
Click here to see answer by josgarithmetic(39617)

Question 1171804: what is an eqation on the line in slope intercept form that has a slope of -3/2 and a y intercept of -5
Click here to see answer by josgarithmetic(39617)

Question 1171837: What is the equation of the line that passes through the point (4, -5) and has an undefined slope

Click here to see answer by ikleyn(52781)

Question 1171813: write the standard form of the equation of the line parallel to the graph of 9x+3y=6 that passes through (0,3)
Click here to see answer by josgarithmetic(39617)

Question 1171889: what is an equation with a slope of -2 and passes through the points (-11,17)
Click here to see answer by josgarithmetic(39617)

Question 1171890: A point (x,y() is equidistant from the line x=2y=3 and the point (2,0) . Find an equation relating x and y.

Click here to see answer by ikleyn(52781)

Question 1171921: Your family likes to go to baseball games. At one game, your family bought 5 soft drinks and 5 hot dogs for $22.50. At the next game your family attended, they bought 4 soft drinks and 3 hot dogs for $14.50. What is the cost of one soft drink and one hot dog?
Let s = the cost of one soft drink
Let h = the cost of one hot dog

Write a system of equations modeling the situation described above.

Solve the system for the cost of one soft drink + one hot dog. (You will have to add your solutions together for this one.) Show your work.

Click here to see answer by josgarithmetic(39617)

Question 1171920: What is an equation of the line that passes through the points (8,−5) and (8, -2)
Click here to see answer by josgarithmetic(39617)

Question 1171920: What is an equation of the line that passes through the points (8,−5) and (8, -2)
Click here to see answer by MathTherapy(10552)

Question 1171934: A student graphs the system below. Describe and correct the student’s error.
x−y≥3
y < −2
x≥1
Click here to see answer by ikleyn(52781)

Question 1171941: On their last math test, Zoe missed three-fourths as many questions as her friend Alexa did. If the two girls together missed a total of 14 questions, how many did Alexa miss?
Click here to see answer by ikleyn(52781)

Question 1171940: On their last math test, Zoe missed three-fourths as many questions as her friend Alexa did. If the two girls together missed a total of 14 questions, how many did Alexa miss?
Click here to see answer by ikleyn(52781)

Question 1171973: 1+1

Click here to see answer by ikleyn(52781)

Question 1171987: write an equation in slope intercept form of the line that has a y intercept of -4 and a slope of 5?
Click here to see answer by Boreal(15235)

Question 1172115: Write an equation in slope intercept form that passes through (3, -5), with a slope
of 4.
8._____________________
Click here to see answer by josgarithmetic(39617)

Question 1172128: The graph of linear function f passes through the point (1,-9) and has a slope of -3. What is the zero of f?

Click here to see answer by Boreal(15235)

Question 1172128: The graph of linear function f passes through the point (1,-9) and has a slope of -3. What is the zero of f?

Click here to see answer by math_helper(2461)

Question 1172032: James is selling chips and lemonade in order to earn more than $90 for the new remote control he wants to buy. He is selling chips for $1.50 and lemonade for $2.
Write an inequality in standard form to represent this situation:_____
What is this inequality in slope intercept form: ________________________
What is the x-intercept of this equation? ________________________
Graph the inequality:
Now, graph: y= -1/2 x + 30. What is the solution to this system of equations?_______
Click here to see answer by Alan3354(69443)

Question 1172134: Write the equation of the line that has slope -2 and passes through (-4,-5).
Click here to see answer by ikleyn(52781)

Question 1172173: I am trying to answer this question from openupresources.org.
A restaurant offers delivery for their pizzas. The total cost is a delivery fee added to the price of the pizzas. One customer pays $25 to have 2 pizzas delivered. Another customer pays $58 for 5 pizzas. How many pizzas are delivered to a customer who pays $80?
What are the steps to answering this type of question?
docmaine@yahoo.com
Click here to see answer by Alan3354(69443)

Question 1172075: Consider the function f(x) = x^5 + 8x^2. Determine the number of zeros of the function after the function f(x) has been vertically stretched by a factor of 3 and vertically translated one unit up.
Click here to see answer by Boreal(15235)

Question 1172163: The variables x and y are related by the equation logy = p logx+log100, where p is constant. The straight line is obtained by plotting log10(y) against log10(x). Given the point (0,k) and (3,8), find the value of k and p.
Click here to see answer by greenestamps(13200)

Question 1172286: write an equation in point slope form for a line with a slope perpendicular to y=5x-3 and passing through the point (2,-9). Then rearrange to standard form.
Click here to see answer by josgarithmetic(39617)

Question 1172332: Find the equation of the line perpendicular to 2x+3y=1 and whose distance from the origin is 7. Please include solutions if you can. Thank you!
Click here to see answer by math_tutor2020(3816)

Question 1172356: At what condition the graph of arcCos(x) is graph of arcSin(x)?
Click here to see answer by ikleyn(52781)

Question 1171790: A certain dosage of radiation, measured in kilorads, must be given to the
tumor near the brain. The dose delivered must be sufficient to kill the malignant cells but the aggregate dose must not exceed established tolerance levels for the brain. Two beams which would deliver radiation exposure to the cells will be used. The goal is to select certain beam durations that would generate the best dosage distribution by minimizing the radiation absorbed by the brain. The data for the radiation therapy is given below:

Fraction of dose absorbed per second Average dosage Area Beam 1 Beam 2 (in kilorads) Brain 0.4 0.5 Spine 0.3 0.1 At most 2.7 Tumor 0.5 0.5 At most 6 Center of Tumor 0.6 0.4 At least 6

Determine the optimal exposure times for beam 1 and beam 2.
Click here to see answer by Theo(13342)

Question 1172453: I need to find the linear equation in slope form of a line that passes through the point (1, 4) and has the slope of -2
Click here to see answer by ankor@dixie-net.com(22740)

Question 1172527: I have a problem can you help me
Its about solving for the value of k that makes each of the following an inconsistent system
1. y=kx-3
3x+3y=6
2. y=kx-2
3x-y=8
3. 3x-2y=7
y=kx-5

Then, Solve for the value of k that makes each of the following a dependent system
4. x-ky=4
2x+4y=8
5. y =x/2-3
2y=x+k

Find the value of k that makes each of the following a consistent independent system
2x + 3y= -6
3x - 2k= 6
Click here to see answer by ewatrrr(24785)

Question 1172540: What is the equation of the line that passes through the point (-6,-6) and has a slope of -1/3?

Click here to see answer by Alan3354(69443)

Question 1172567: -3(x +2)=5y

Click here to see answer by Alan3354(69443)

Question 1172567: -3(x +2)=5y

Click here to see answer by josgarithmetic(39617)

Question 1172598: Customers of a phone company can choose between two service plans for long distance calls. The first plan has no monthly fee but charges $0.19 for each minute of calls. The second plan has a $24 monthly fee and charges an additional $0.15 for each minute of calls. For how many minutes of calls will the costs of the two plans be equal?
Click here to see answer by felizgu(1)

Question 1172607: Parallel to the line y = 3x -1, passes through (8, -2)

Click here to see answer by josgarithmetic(39617)

Question 1172635: y=x+4
y=3x−1
Click here to see answer by ewatrrr(24785)

Question 1172712: Write the slope-intercept form of the equation that goes through the point (0, 0) and is parallel to the line that has a slope of -6.
Click here to see answer by josgarithmetic(39617)

Question 1172770: Write a linear equation that goes
through (2, -3) and is perpendicular to
y = 2x - 4.

Click here to see answer by josgarithmetic(39617)

Question 1172777: Convert the equation 2x - 4y =8 in the form y = mx + b.

Click here to see answer by math_helper(2461)

Question 1172834: how to solve 3x + y - 2 = 0 and 2x - y - 3 = 0

Click here to see answer by greenestamps(13200)

Question 1172834: how to solve 3x + y - 2 = 0 and 2x - y - 3 = 0

Click here to see answer by mahikab(11)

Question 1172835: What is the equation of each line slope-intercept form?
a. parallel to y=3x+1 through (4,-1)
b. perpendicular to y=3x-4 with the same y-intercept as -x+5y=10
Click here to see answer by ewatrrr(24785)

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