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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 331465: 16) Christine bought a handbag for $53.40 on sale. It was marked down 40% off the original price. How much did Christine save?
17) Joe got a promotion at work and a 15% raise. If Joe’s new salary is $48,000 a year, how much did Joe make before his raise?
18) The length of a rectangle is 3 inches more than the its width. If the perimeter of the rectangle is 30 inches, find the length and width of the rectangle.
19) The sum of the angles of a triangle is 180o. The first angle of the triangle measures double the second angle. The third angle of the triangle measures 20 degrees more than the second. Find the measure of each angle.
20) Brenda and Gillian live 1 mile apart along the same street. Brenda walks at a rate of 3 miles per hour and Gillian walks at a rate of 2.5 miles per hour. If they each leave their own house at the same time, how long, to the nearest minute, will it take for them to meet? (HINT: Remember that Distance = Rate x Time)

Click here to see answer by rfer(12660)

Question 331351: If 10 less than twice a number is decreased by 5 less than 3 times the number, the result is same as the original number increased by 7. What is the number?
Click here to see answer by ankor@dixie-net.com(15652)

Question 331483: This site is for tutors to help not make the questions harder so nayone but john please help with this question. Solve the system x+y+z=-1
x-y+3z=-17
2x+y+z=-2
Click here to see answer by mathmandotcom(31)

Question 331490: mathmandotcom the answer you gave me for the solve the system x+y+z=-1
x-y+3z=-17
2x+y+z=-2 was wrong
the answer is one of the following
a. (-4,-1,4)
b. (-4,4,-1)
(-1,4,-4)
(4,-1,-4) can someone help me get the right answer anyone but john please
Click here to see answer by Fombitz(13828)

Question 331519: Please show me how to find the slope and the y-intercept of the line.
9y+6x+4=17+6x
I'm coming up with a slope of 13/9 and y-intercept is (0,0)
I know that's incorrect.
Please help
Click here to see answer by mananth(12270)

Question 331485: anyone but john please help with question. Solve the following ssystem of equation xy=1
2x-y=1
Click here to see answer by JBarnum(2044)

Question 331485: anyone but john please help with question. Solve the following ssystem of equation xy=1
2x-y=1
Click here to see answer by Edwin McCravy(8909)

Question 331547: What is the y-intercept of the line parallel to 2y = 3x + 8 and passing through
(4, 16)?
Click here to see answer by JBarnum(2044)

Question 331605: how do you arrange these physics equations
t=2pi sqrt((r^3)/(gm)) solve for m
a/b + c= a/d solve for b
d = vt + (1/2)at2 solve for v
Click here to see answer by texttutoring(324)

Question 331605: how do you arrange these physics equations
t=2pi sqrt((r^3)/(gm)) solve for m
a/b + c= a/d solve for b
d = vt + (1/2)at2 solve for v
Click here to see answer by solver91311(16885)

Question 331614: solve the following system of equations x^2+y^2=8
x^2-y^2=0
Click here to see answer by solver91311(16885)

Question 331628: That was so ignorant of you John and Fombitz I was not even talkn to you and Im a grown woman will not stoop to your level and my computer is messed up thats where the erros came from Im almost your age and have commen sense not to argue with ignorant people ignor me if you like there are better and professional tutors out there that will be glad to help me so you shouldnt assume why dont you go back to school and learn some manners on how to talk to people and mind your business!!
Click here to see answer by solver91311(16885)

Question 331629: Thanks Mathmandotcom for correcting your mistake and not taking it personal like the asshole tutors John and Fombitz who dont know how to carry theirselves like adults not everyone seeking help are kids and maybe someone monitoring these webssite for assholes like them once again thankyou and you have my apology if I offended you.
Click here to see answer by solver91311(16885)

Question 331619: Thankyou to all the tutors who gave me thir help and support without all the nasty comments like fombitz, I do try to do my work on my own but I get suuck like every body eles who ask for your help thankyou alot didnt mean to offend anyone but the nasty comments ins not needed.
Click here to see answer by solver91311(16885)

Question 331610: Fombitz first of all if your not here to help people then your doing the wrong thing by getting smart with me and making nasty comments you dont know what and who your talking about mathmandotcom did give me the wrong answer and then corrected it so next time you lash out please know what your talking about instead of the nasty comments you are the one who should apologize not me I do my work and the tutors do not do it all for me very un professional
Click here to see answer by solver91311(16885)

Question 331621: solve the following system of equations xy=1
2x-y=1 I know to multiply both sides by 1/4 but in which equation or both
Click here to see answer by solver91311(16885)

Question 331644: When y=-3x+4 is graphed, the value 4 represents which of the following?
a. the slope of the line
b. the y coordinate of the y intercept
c. the x coordinate of the y intercept
d. the quadrant in which the line lies
Click here to see answer by solver91311(16885)

Question 331637: 4 - (2x - 9)= -19
Click here to see answer by rfer(12660)

Question 331613: solve the system x-y+2z=7
2x+z=4
x+5y+z=9
Click here to see answer by Edwin McCravy(8909)

Question 331800: will you show me how to work these problems out ?
Please , amd thank you ( :
Solve by graphing.
1. y=x-1
y=-x+7
2. y=4x+7
y=-3x
3. y=-3x-4
3x+y=4
4. y=-x+2
3x+3y=12
5. y=4x-3
y=-3x-3
6. y=3x+2
2x+y=-8
7. x+y=2
y=-2x-1
8. 3x-6y=12
2x-4y=8
Click here to see answer by Alan3354(30993)

Question 331797: will you show me how to work these problems out ?
Fine the slop of a line parallel to the graph of each equation .
Please , amd thank you ( :
1. y=2/7x+1
2. y=-1/2x+1
3. y-3=0
4. 9x-5y=6
5. 6x-7y=10
6. -3x-5y=6
7. (-5,5);y=-5x+9
8. (1,1);y=-1/4+7
9. (0,-3);y=-4/3x-7
Click here to see answer by Alan3354(30993)

Question 331836: this is for slope and y-intercept and i would love to know how would you graph this on a grid (–2x + 3y = -6) could you please help me this is very imporant
Click here to see answer by checkley77(12569)

Question 331904: Solve using the five-step problem-solving process. Show all steps necessary to arrive at your solution.
The second angle of a triangle is 3 times as large as the first. The third angle is 55° more than the first. Find the measure of the smallest angle.

Click here to see answer by mananth(12270)

Question 331943: (5x+1)/6=(4x-1)/2

Click here to see answer by mananth(12270)

Question 331943: (5x+1)/6=(4x-1)/2

Click here to see answer by CenturySimons(1)

Question 332021: Help me please! simplify: SQROOT 12X^5 - SQROOT 18x - SQROOT 300x^5 + SQROOT 98x?
Click here to see answer by Alan3354(30993)

Question 332041: graph y=4 and x=0
Click here to see answer by jim_thompson5910(28595)

Question 332052: g(x)=5/2-7x what is the domain?
Click here to see answer by user_dude2008(1861)

Question 332069: Please help me write the equation of the line in slope intercept form through the point with coordinates (-4,6) and perpendicular to 3x-2y=8.
please and thank you
Click here to see answer by jim_thompson5910(28595)

Question 332000: find the equation of the line parallel to 8x-y=4 having the same y intercept as x-2y=3
Click here to see answer by ankor@dixie-net.com(15652)

Question 332110: The largest egg laid by any bird is that of the ostrich. An ostrich egg can reach 8 inches in length. The smallest is that of the vervain hummingbird. Its eggs are approximaetly 0.4 inches in length. Write an inequality that represents the various of bird eggs.
Click here to see answer by rfer(12660)

Question 332073: find an equation of the line having the give slope and containing the give point m=-7, (3,4)
Click here to see answer by ankor@dixie-net.com(15652)

Question 332135: ELIMINATION METHOD
3X-5Y=66
3Y=8-5X

SUBSITUTION METHOD
15X-10Y=-5
5Y+3+10X
Click here to see answer by checkley77(12569)

Question 332133: Write an equation of the line containing the given point and parraller to the given line. (8,-1);5x-9y=7
Click here to see answer by checkley77(12569)

Question 332132: 8+h<3h-[7-(2-h)]
Click here to see answer by checkley77(12569)

Question 332106: find the standard form f the equation that passes through the pins (-1,-9)and(-4,-8)

Click here to see answer by checkley77(12569)

Question 332146: Please help me solve the quadratic equation -9x + 24x -16 = 0
Click here to see answer by Edwin McCravy(8909)

Question 332161: whats an equation of the lines that passes through (4,3) and its parallel to the line 3x-y=7?
Click here to see answer by mananth(12270)

Question 332103: Solve the inequality 8+h<3h-[7-(2-h)]
Click here to see answer by rfer(12660)

Question 332182: please solve
y= 2x+5: (8, ), (-1, ), ( ,-1)
Click here to see answer by texttutoring(324)

Question 332181: graph the equation and plot at least five points for each equation.
x-2y=6
Click here to see answer by texttutoring(324)

Question 332204: graph
y-5=1/2(x+4)
Click here to see answer by nyc_function(2733)

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