Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 142012: Is this function always increasing, decreasing, or remaining constant?
y = 0(-x + 1)
a. always increasing
b. always decresing
c. always constant
d. there is no way to know
Click here to see answer by stanbon(75887)

Question 142011: x for x < 6
6 for x > 6
What is f(x) if f(x) =
a. The difference quotient
b. An indeterminate function
c. A piecewise function
d. A step function

Click here to see answer by stanbon(75887)

Question 142010: Is this a function?
x + y = 12
a. yes
b. no
c. It depends
d. None of the above
Click here to see answer by stanbon(75887)

Question 142007: What is the slope of the line that passes through (-4,-2) and the origin?
a. m=1/2
b. b=1/2
c. m=-1/2
d. Insufficient information given
Click here to see answer by stanbon(75887)

Question 142028: make b the subject of the formula a=(8b+5)/(4-3b)
Click here to see answer by stanbon(75887)

Question 142028: make b the subject of the formula a=(8b+5)/(4-3b)
Click here to see answer by Edwin McCravy(20055)

Question 142029: the sum of the ages of two brothers is 24 years.in three years,times, the elder brother will be twice as old as younger brother.how old are the brothers?
Click here to see answer by ankor@dixie-net.com(22740)

Question 142037: Find the equation of a circle with radius 5 and centered at (3,-1).
Click here to see answer by Fombitz(32388)

Question 142061: Solve the equation: (4^2-x)(16^x+1)=64
FYI - The 2-x and x+1 the exponents.
Click here to see answer by jim_thompson5910(35256)

Question 142106: Solve.
8x - (5x+4)=5
The solution is x = ??
HELP
Click here to see answer by jim_thompson5910(35256)

Question 142213: Solve the equation
5m-8=57

thanks yall
Click here to see answer by jim_thompson5910(35256)

Question 142211: solve the equation
1.)4t+5=37

Thanks so much
Click here to see answer by jim_thompson5910(35256)

Question 142212: 2. r/2-8+=-4 solve the equation

Thanks a lot
Click here to see answer by jim_thompson5910(35256)

Question 142223: ax/2b-c/3d+x=1 solve for x
Click here to see answer by stanbon(75887)

Question 142254: 14.9 = 8.6 + 0.9m
Click here to see answer by checkley77(12844)

Question 142230: Can you please show me how solve this equation -5y = y + 6
Click here to see answer by scott8148(6628)

Question 142253: 4.6b + 26.8 = 50.72
Click here to see answer by checkley77(12844)

Question 142252: y
- + 8 = 19
7
Click here to see answer by checkley77(12844)

Question 142333: Over what interval of the domains is this function increasing:
f(x) = x^2 + 4
Click here to see answer by stanbon(75887)

Question 142412: Find the equation of the line having y-intercept (0,5) and x-intercept (4,0).

Click here to see answer by checkley77(12844)

Question 142370: Bill is paid hourly. If he works 8 hours he will receive $50. Write an equation for his salary based on the number of hours he works. .
Click here to see answer by checkley77(12844)

Question 142447: solve for x
75= 68+80+x/3
Click here to see answer by checkley77(12844)

Question 142410: Which of the following equations describe the same line as the equation 1/2x-5y=1?
(a) 2x-1/5y=1
(b) x=5y+2
(c) 2-5x+10y=0
(d) y=.1(x-2)
(e) 10y-x= -2
(f) 1+.5x=2+5y

Click here to see answer by scott8148(6628)

Question 142409: Which of the following equations describe the same line as the equation 2x+3y=6?
(a) 4x+6y=12
(b) y= -2/3x+2
(c) x=3-3/2y
(d) 6-2x-y=0
(e) y=2-2/3x
(f) x+y=1

Click here to see answer by scott8148(6628)

Question 142463: Hey,
My name is samantha I'm in 7th grde and I just don't get these problems, can you help? I kind of need to know tonight. Thanks!
15-3x=-6
2.3a+8.6= -5.2
9=-5g-23

5 3 1
- - - = (- - )
2 2 2
p
8=6+ -
4
7+s
___ =-4
5
2 11
- - 6h= - -
3 6
Click here to see answer by stanbon(75887)

Question 142469: 1/10(x+8) - 1/15(x-5)=1 My teacher told me the answer was -4 I think...I got negative 33 which is obviously wrong xD. Please help me know my error and see how to get the right answer. I'm usually good with this equations, but it was probably a simple mistake that gave me my subsequent error. Okay, well, if you answer, I would be most delightful and thankful!!
Click here to see answer by stanbon(75887)

Question 142492: The amount of Flim (I) is inversely proportional to the amount of Flam (A). Write a general equation that summarizes this relationship.
Click here to see answer by stanbon(75887)

Question 142491: Write the equation of the line parallel to 3x - y = 2 and passing through (2, -3).
Click here to see answer by stanbon(75887)

Question 142490: Solve
(by factoring) x2nd power - 24 = -2x
Click here to see answer by stanbon(75887)

Question 142516: Simplify the expression. Write your answer in scientific notation.

(2.6 x 10^5)^2
Help with this question would be greatly appreciated.
Click here to see answer by checkley77(12844)

Question 142621: Could you please help me with a few problems,that I'm having trouble with? Thank you for your time in advance.
Find the zero of the linear function is what it says.
1) f(x)= x + 5
2) f(x) = -x + 18
3) f(x) = 16 - x
4) f(x) = x - 6
Thanks again for people like you. Elle J

Click here to see answer by solver91311(24713)

Question 142755: If f(g(x)) = g(f(x)) = x, then what can we say about f(x) and g(x)?
a. they are functional inverses of each other
b. f(x) = g(x)
c. f(x) = g(x) = x
d. Nothing can be said about f(x) and g(x)
Click here to see answer by stanbon(75887)

Question 142750: Which of the following is a translated version of f(x) = x^3?
a. f(x) = x^3 + 1
b. f(x) = (x - 12)^3
c. f(x) = (x - 12)^3 + 1
d. All of the above
Click here to see answer by stanbon(75887)

Question 142765: (x-5)(x-2)=0
Click here to see answer by stanbon(75887)

Question 142747: (f*g)(x) = (g*f)(x)
a. always
b. never
c. sometimes
d. there is no such thing as (f*g)(x)
Click here to see answer by stanbon(75887)

Question 142738: Which of the following is a reflection of f(x) = -x + 1 about the x-axis?
a. r(x) = x + 1
b. r(x) = x - 1
c. r(x) = -(x - 1)
d. None of the above
Click here to see answer by stanbon(75887)

Question 142735: Find two positive real numbers that differ by 2 and have a product of 10.

Click here to see answer by checkley77(12844)

Question 142790: Is this correct?
Find the x-coordinate
3x+y=4
x-5y=-6 ----- x=5y-6
Substitute that in the equation 3(5y-6)+y=4 and you get y= 11/8
Substitute 11/8 in the equation 3x+11/8 = 4 and you get x= 7/8
The x-coordinate would be 7/8
Is this correct?

Click here to see answer by scott8148(6628)

Question 142753: solve by
completing the square
4x + 2 = x2nd power
Click here to see answer by nabla(475)

Question 142884: Factor by grouping:
6wy - 2xy + 9bw - 3bx
Click here to see answer by vleith(2983)

Question 142873: If g(x) is an inverse of f(x), then how do the ordinate and abscissa coordinates of the points on f(x) map onto coordinates of g(x)?
a. They swap roles
b. The ordinates values in f(x) become the abscissa values in g(x) and the abscissa values in f(x) becomes the ordinate value in g(x).
c. Neither a nor b
d. Both a and b
Click here to see answer by stanbon(75887)

Question 142871: Consider f(x)=x^2; s(x) is f(x) shifted which way and how far, if
s(x) = (x+2)^2 -3?
a. To the left 4 units
b. to the right 2 units
c. to the left 2 units
Click here to see answer by stanbon(75887)

Question 142887: Find an equation to go with 5x + 2y = 11 such that the solution of the system is (3, -2). Answers may vary.
I'm not very good at any kind of math, so this is pretty foreign to me. I really don't have any idea where to start. Can anyone help?
Click here to see answer by oscargut(2103)

Question 142883: Factor:
6x2nd power + x -2
Click here to see answer by Earlsdon(6294)

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, 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, 36046..36090, 36091..36135, 36136..36180, 36181..36225, 36226..36270, 36271..36315, 36316..36360, 36361..36405, 36406..36450, 36451..36495, 36496..36540, 36541..36585, 36586..36630, 36631..36675, 36676..36720, 36721..36765, 36766..36810, 36811..36855, 36856..36900, 36901..36945, 36946..36990, 36991..37035, 37036..37080, 37081..37125, 37126..37170, 37171..37215, 37216..37260, 37261..37305, 37306..37350, 37351..37395, 37396..37440, 37441..37485, 37486..37530, 37531..37575, 37576..37620, 37621..37665, 37666..37710, 37711..37755, 37756..37800, 37801..37845, 37846..37890, 37891..37935, 37936..37980, 37981..38025, 38026..38070, 38071..38115, 38116..38160, 38161..38205, 38206..38250, 38251..38295, 38296..38340, 38341..38385, 38386..38430, 38431..38475, 38476..38520, 38521..38565, 38566..38610, 38611..38655, 38656..38700, 38701..38745, 38746..38790, 38791..38835, 38836..38880, 38881..38925, 38926..38970, 38971..39015, 39016..39060, 39061..39105, 39106..39150, 39151..39195, 39196..39240, 39241..39285, 39286..39330, 39331..39375, 39376..39420, 39421..39465, 39466..39510, 39511..39555, 39556..39600, 39601..39645, 39646..39690, 39691..39735, 39736..39780, 39781..39825, 39826..39870, 39871..39915, 39916..39960, 39961..40005, 40006..40050, 40051..40095, 40096..40140, 40141..40185, 40186..40230, 40231..40275, 40276..40320, 40321..40365, 40366..40410, 40411..40455, 40456..40500, 40501..40545, 40546..40590, 40591..40635, 40636..40680, 40681..40725, 40726..40770, 40771..40815, 40816..40860, 40861..40905, 40906..40950, 40951..40995, 40996..41040, 41041..41085, 41086..41130, 41131..41175, 41176..41220, 41221..41265, 41266..41310, 41311..41355, 41356..41400, 41401..41445, 41446..41490, 41491..41535, 41536..41580