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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 69485: Simplify each algebraic expression
A 4a+9+3a-7
B 6 (3x+4) + 5 (2x-1)
Please help me on this
Thanks
Click here to see answer by justsmilexx(8)

Question 69492: question......write an equation in point slope form and slope intercept form of the line passing through (-12,1) and perpendicular to the line whose equation is 6x-y-4=0
Click here to see answer by stanbon(57290)

Question 69497: Evaluate each algebraic expression for the give value of the variable.
A x^2-2x+3 x=-1
B-x^2-7x x=-2
Please help solve this
Click here to see answer by justsmilexx(8)

Question 69530: Hi,
I need to find 3 solution for 6x-3/2y-12=12

Thanks
Click here to see answer by bucky(2189)

Question 69490: Use the order of operations to simplify each expression
A 36-24/4.3-1
b -8(-4 -5 (-3)

Please help solve this
Click here to see answer by tanimachatterjee(60)

Question 69564: L has y-intercept (0,2)and is perpendicular to the line with equation 2x-3y=6.
Click here to see answer by funmath(2925)

Question 69563: L has y-intercept (0, -3)and is parallel to the line with equation y= 2/3x + 1.
Click here to see answer by funmath(2925)

Question 69561: Write the equation of the line with given slope and y-intercept. Then graph each line using the slope and y-intercept.
Slope: -2: y-intercept: (0,4)
Click here to see answer by funmath(2925)

Question 69560: Write the equation of the line passing through each of the given pairs of points. Write your result in slope-intercept form, where possible.
(-1,3)and (4,-2)
Click here to see answer by funmath(2925)

Question 69545: how do i graph?
y=3/4x+2
I know that the y intercept is (0,2)I will subsitute 4 for x that will give me
y=3/4(4)+2
y=3+2
y=5
so the other point is (4,5) now i am stuck on my graph
Click here to see answer by funmath(2925)

Question 69589: 2x+y=15
Click here to see answer by tutorcecilia(2152)

Question 69611: 12 is what percent of 240?
Please help on this
Click here to see answer by Earlsdon(6287)

Question 69633: The two points(30,-25) and (50,65) determine a line
Click here to see answer by checkley75(3666)

Question 69633: The two points(30,-25) and (50,65) determine a line
Click here to see answer by stanbon(57290)

Question 69629: (-4,7); m=-5
Click here to see answer by checkley75(3666)

Question 69627: I am trying to find out how to find the slope of the line that contains
(9,5) and (9,9). I got this wrong on a text.
Thank you
Click here to see answer by checkley75(3666)

Question 69627: I am trying to find out how to find the slope of the line that contains
(9,5) and (9,9). I got this wrong on a text.
Thank you
Click here to see answer by venugopalramana(3286)

Question 69622: The line through the points (4,5) and (10, -2)
Click here to see answer by checkley75(3666)

Question 69685: Tell the answer to, or how to put, 4x-5y=10 -into slope intercept form
Tell the answer to, or how to put, y=-3/2x+4 -into standard form
Click here to see answer by bucky(2189)

Question 69668: Can you help me ith graphing the equation y=3.5?
Click here to see answer by checkley75(3666)

Question 69668: Can you help me ith graphing the equation y=3.5?
Click here to see answer by bucky(2189)

Question 69666: How would I graph the equation x=-7?
Click here to see answer by checkley75(3666)

Question 69665: How would I graph the equation y=3/4x?
Click here to see answer by checkley75(3666)

Question 69671: Suppose that the relationship between te tempeature t of a cup of water (in degrees fahrenheit) and the number of seconds s that is in themicrowave is given by linear equation. If initially, the temperature is 60 degrees fahrenheit, and after 120 seconds it has risen to 200 degrees fahrnheit:
1) What would the temperature be after 30 seconds?
2) How long would youhave to leave it in for the temperature to reach 300 degrees fahrenheit?
Click here to see answer by stanbon(57290)

Question 69663: Can you help me find the slope of the line y=76.
Click here to see answer by checkley75(3666)

Question 69664: Please help me find the vertical line hrough the point (-80, 135).
Click here to see answer by stanbon(57290)

Question 69669: Word problem-The number of case of HIV/AIDS worldwide is modeled by the equation y=2x+33, where y represents the number of HIV/AIDS cases, in millions, and x reprsents the number of years since 1999 (i.e., the beginning of 1999 corresponds to x=0).
a) Going by the equation, how many people with HIV/AIDS were there in 2002?
b) If it continues, in what year will the number of cases reach 60 million?
c) How much do the number of people with HIV/AIDS increase or decrease each year?
d) Graph the equation, for the years between 1999 and 2019?
Click here to see answer by stanbon(57290)

Question 69614: find the slope of each line. It's on a graph and I don't understand how to do these.The coordinates on the graph are y={4,3} and x={0,2} or vice versa.Can't draw the graph on here but these coordinates are both above the horizontal line going through the middle of the graph.
Click here to see answer by checkley75(3666)

Question 69608: Solve each formula to specified variable
P=21+2w for w
T= d+pm for m
Please help
Click here to see answer by checkley75(3666)

Question 69603: Solve and check each equation
5x+9-7x+6=x+18
Please help solve
Thanks
Click here to see answer by checkley75(3666)

Question 69723: The product of twice a number and three is the same as the difference of five times the number and 3/4. Find the number.
Click here to see answer by checkley75(3666)

Question 69737: Write the equation of the line passing through each of the given pairs of points. Write your result in slope-intercept form, where possible.
(2,-3) and (2,4)
Click here to see answer by checkley75(3666)

Question 69747: my question is what i did wrong on this problem?
y=x-4
4x+y=26
Click here to see answer by stanbon(57290)

Question 69748: I'm having trouble helping my daughter solve two step equations on the following two : f-6 over the number 5 =3.2 then
44= -4 + 8p
Click here to see answer by stanbon(57290)

Question 69748: I'm having trouble helping my daughter solve two step equations on the following two : f-6 over the number 5 =3.2 then
44= -4 + 8p
Click here to see answer by checkley75(3666)

Question 69751: Solve each inequality & graph the solution on the number line for #11 & #12
#11 6-9x>33
#12 4x+6<5x
Please help me out on this problem.
Thanks
Click here to see answer by stanbon(57290)

Question 69753: The product of 5 and a number decreased by 9 is 310. What is the number?
Please help me out on this problem.
Thanks
Click here to see answer by checkley75(3666)

Question 69752: 12 is what percent of 240?
Please help me get this one.

Click here to see answer by checkley75(3666)

Question 69802: solution to problem y=3x+3
use a table of values to graph the equation
Click here to see answer by checkley75(3666)

Question 69535: One hour out of the station, a train engine develops trouble that slows the train to 3/5 of its average speed to the time of the failure. Continuing at this reduces speed,it reaches its destination two hours late. Had the trouble occurred 50 miles beyond, the delay would have been reduced by 40 minutes. Find the distance from station to the destination.
Click here to see answer by ankor@dixie-net.com(15646)

Question 69855: find the area of a trapezoid if the two bases are 10 inches and 14 inches the altitude is 16 inches.
Click here to see answer by checkley75(3666)

Question 69821: Find the slope of the line passing through the points (–1, 7) and (3, 3).

Click here to see answer by checkley75(3666)

Question 69959: Please help me with this problem, I have posted it 3 times.
The water level of a reservoir is measured over a five month period at the beginning, the level is 25 ft, during this time, the level fell 3 ft, then rsoe 1 ft, then fell 4 ft, and then rose 2 ft. What is the reservoirs water level at the end of 5 months.
Thanks
Click here to see answer by ankor@dixie-net.com(15646)

Question 69962: Find the slope & the y-intercept of the line with the given equation
y=5x-7
y=3
Please help me with this problem
Thanks
Click here to see answer by josmiceli(9668)

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