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

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Question 1010548: 2x + 5y = -1
x + 2y = 0
can u please show me how to solve this problem step by step
Click here to see answer by addingup(3677)

Question 1010602: Fill in the coordinate for the line y = 3x + 2: (1, )

3
-3
5
-5

Click here to see answer by stanbon(75887)

Question 1010603: Fill in the other coordinate for the line 3x - 5y = 2: (2, )

-3/5
4/5
5/3
3/2

Click here to see answer by It is costly(175)

Question 1010610: Solve each system using substitution.write no solution or infinitely many solutions where appropriate.(1)x=-2y+1. x=y-5 (2) y=x-7.2x+y=8 (3)3x+y=10.y=-3x+4 (4)4x+2y=8.y=-2x+4 (5)5x-3y=-4.x+y=-4 how to solve this?
Click here to see answer by MathLover1(20849)

Question 1010666: Steve started with $250 and spent
$25 per week. Chelsea started with $30 and saved $30 per week. Use x for time and y for savings. Write an equation to represent each situation. Graph the equations. What is the initial value and the roc?

Click here to see answer by stanbon(75887)

Question 1010211: How to graph; y is equal to or less than -x + 4

Click here to see answer by fractalier(6550)

Question 1010146: The distance d, in miles, a car travels on the highway over time t, in hours, is modeled by the linear function d=60t+20. Identify the rate of change and explain what it means in this situation.
Click here to see answer by fractalier(6550)

Question 1010754: The directions say this: "Find the value of x or y so that the line through the points has the given slope." It took me a while, but I got the basics down. Then I came across a problem where the slope is undefined, and I'm stuck. Math final is tomorrow, please help! :)
(x,1) and (-5,8); slope: undefined
Click here to see answer by Alan3354(69443)

Question 1010763: How do u solve y=-1 on a graph without the slope

Click here to see answer by Alan3354(69443)

Question 1010802: Find the equation of the line with the following slope and y intercept. Write the final answer in the slope-intercept form y = mx + b.
Slope = -9, y intercept = 0
y=
Find the equation of the line passing through the points below. Write the final answer in the slope-intercept form y = mx + b.
(-1, 8); (7, 2
y=
Click here to see answer by josgarithmetic(39617)

Question 1010833: Perimeter of an isosceles triangle is 13 cm . length of each congruent side of a triangle is less than its base by 1 cm. find the length of the base and each congruent side og a triangle .?
Click here to see answer by josgarithmetic(39617)

Question 1010878: how do i find the slope of the line that passes through this pair of points 4,6 and 7,0
Click here to see answer by fractalier(6550)

Question 1010897: Find the standard equation of a line with slope 3/4 and y intercept of -1
Click here to see answer by fractalier(6550)

Question 1010902: Find the slope of the line passing through the points (-3, -10) and (4, 5).
Click here to see answer by fractalier(6550)

Question 1010902: Find the slope of the line passing through the points (-3, -10) and (4, 5).
Click here to see answer by Boreal(15235)

Question 1010910: Find the coordinates of the x-intercept. -x + 5y = -15
Click here to see answer by Boreal(15235)

Question 1010908: Find the slope of the line passing through the points (0, -4) and (-6, 7).
Click here to see answer by MathLover1(20849)

Question 1010908: Find the slope of the line passing through the points (0, -4) and (-6, 7).
Click here to see answer by It is costly(175)

Question 1010924: How do you find the slope and y intercept of equations like this! I'm trying to help my 8th grade daughter with algebra and I'm struggling is been way too long since i took algebra. Thanks in advance.
Y=(2-a)x+a
Click here to see answer by Theo(13342)

Question 1010980: write the equation of a line that has an x-intercept of -7 and a y-intercept of 2
Click here to see answer by stanbon(75887)

Question 1009156: The Shape of the galaxy arch in st.Louis Missouri resembles a parabola with the equation h=-0.00635x^2+4.0005x-0.07875 where h is the height in feet and x is the distance from one base in feet
What is the distance from one base of the arch to the other?
Click here to see answer by fractalier(6550)

Question 1010269: differentiate the following function:
f(x)=(x^2+1/x^3 )(x^3-x^2+1)

Click here to see answer by Cromlix(4381)

Question 1011198: What is the answere to the following question:
The line passes through (8,-3) and is parallel to the line whose equation is y=2x+3
Click here to see answer by Edwin McCravy(20054)

Question 1011201: write an equation for
the line that passes through(-2,0) and has a slope of 5 ( in point-slope form)
Click here to see answer by It is costly(175)

Question 1011208: y+4=-4(x-2)
rewrite this equation in slope-intercept form?
rewrite this equation in standard form?
what is the equation in standard form of perpendicular line that passes through(5,1)
what is the x-intercept of the perpendicular line
thank you
Click here to see answer by rothauserc(4718)

Question 1011235: Max sells lemonade for $2 per cup and candy for $1.50 per bar. He earns $425 selling lemonade and candy.
1) write a linear model that relates the number of cups of lemonade he sold to the number of bars of candy he sold.
Click here to see answer by stanbon(75887)

Question 1011261: a family leaves home at 1pm, when billy asks are we there yet at 2:30pm they are 70 miles from gramdma's house, when jane asks at 2:45pm they are 55 miles away.
how far from grandma's does the family live
at what time will the family arrive at grandma's
Click here to see answer by KMST(5328)

Question 1011259: if a bottle of soda pop costs$2 and a large bag of chips is $3, write an equation in standard for that models the possible combinations if you have $15 .(let p=soda pop, c=chips.
if you bought only soda how many could you buy?
if you bought only 3 bottles of soda, how many bags of chips could you buy
Click here to see answer by josgarithmetic(39617)

Question 1011312: The length of a rectangle is 3 inches longer than the width. If the perimeter of the rectangle is 42 inches, find the measures of the length and width
Please help
Click here to see answer by It is costly(175)

Question 1011304: Aiden earns $37 mowing lawns. At his favorite store it costs $6.50 to rent a newly-released video game and $4 to rent movies
write an equation that gives the amount of money Aiden has left, b, after renting 1 video game and m movies?
How many movies can Aiden rent if he rents no video games?
How many video games can he rent if he rents no movies?
Click here to see answer by josmiceli(19441)

Question 1011348: Solve the following system by graphing.
x - y = 4
x + y = 2

Click here to see answer by stanbon(75887)

Question 1011348: Solve the following system by graphing.
x - y = 4
x + y = 2

Click here to see answer by MathTherapy(10552)

Question 1011351: Solve the following system by graphing.
x + y - 6 = 0
x - y = 0
Click here to see answer by MathLover1(20849)

Question 1011351: Solve the following system by graphing.
x + y - 6 = 0
x - y = 0
Click here to see answer by stanbon(75887)

Question 1011350: Solve the following system by graphing.
x + y - 6 = 0
x - y = 0
Click here to see answer by MathLover1(20849)

Question 1011360: what is the standard form of the equation of the line through the given point and slope
through:(3,-1), slope=-1
Click here to see answer by Alan3354(69443)

Question 1011358: 6. A baker has 150, 90, and
150 units of ingredients A, B, and C, respectively. A loaf
of bread requires 1, 1, and 2 units of A, B, and C,
respectively. A cake requires 5, 2, and 1 units,
respectively. A pizza requires 3, 2, and 1 units,
respectively. The number of loaves of bread and pizzas
must each be at least three times the number of cakes.
If a loaf of bread sells for $0.75, a cake sells for $2, and
a pizza sells for $2.50, how many of each should he
bake to maximize his gross income?
Click here to see answer by stanbon(75887)

Question 1011426: What is the slope of the line that is perpendicular to the graph of y = 2/7 x + 9?
Click here to see answer by Alan3354(69443)

Question 1011425: What is the slope of a line that is parallel to the graph of the y=-4/5 x+7?
Click here to see answer by Alan3354(69443)

Question 1011630: Carlos buys a phone for $125 he pays $75 in monthly rates.what is the equation of money he pays for in x months.thank you
Click here to see answer by ikleyn(52780)

Question 1011673: y=4x+100
1. represent the equation by drawing a graph assuming any 5 values for "x"
2. use the graph to find the number of units produced if the total cost is omr 600.
Click here to see answer by MathLover1(20849)

Question 1011723: t^2-k^2<6
t+k>4
t and k are positive in integers if t>k what is the value of t?

Click here to see answer by rothauserc(4718)

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, 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