Questions on Algebra: Graphs, graphing equations and inequalities answered by real tutors!

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Question 999803: x-y=3

Click here to see answer by solver91311(24713)

Question 999809: Convert to y=mx+b
Problem: passing through (-2, 4) and (3, -1)
Click here to see answer by mananth(16946)

Question 999935: use the graph of y=e^x to evaluate the expression e^1.5
Click here to see answer by fractalier(6550)

Question 999935: use the graph of y=e^x to evaluate the expression e^1.5
Click here to see answer by MathLover1(20849)

Question 999969: Write an equation of the line that passes through (2,−5) and is parallel to the line 2y=3x+10.
Click here to see answer by MathLover1(20849)

Question 1000071: Write a function rule to describe each of the following scenarios
The cost of playing r games of racquetball each month at a fitness club that charges a $35 monthly membership fee plus $2 per game of racquetball.
Click here to see answer by josgarithmetic(39617)

Question 1000163: Okay so I know how to graph this I just don't know how to show my work for it.
graph the piece wise function :
g(x)=
{12-x if x≤5
{x+2 if 5 Link to my graph ; http://prntscr.com/8x5jk3
Thanks how to show my work?

Click here to see answer by stanbon(75887)

Question 1000164: Hi, I just need to know how to show my work.
I graphed it.
Graph the piece wise function.
f(x)=
{6 if x < -2
{3x if -2 ≤ x
heres link to my graph :
http://prntscr.com/8x5l2d
thanks
Click here to see answer by Boreal(15235)

Question 1000189: What is the equation in slope intercept form for (2, 3) (1, 5)? No pressure, but please hurry! Sorry and thank you!
Click here to see answer by josgarithmetic(39617)

Question 1000191: Write an equation in slope-intercept form for the line that passes through the given point and is parallel to the given line.
(−3,5);y=−12x+4
Click here to see answer by MathLover1(20849)

Question 1000190: Write an equation in slope-intercept form for the line that passes through the given points.
(5, −2), (−16, 4)
Click here to see answer by MathLover1(20849)

Question 1000223: evaluate each function
p(t) = t2 + 3 ; find p(2)
Click here to see answer by jim_thompson5910(35256)

Question 1000248: are the following functions inverse of each other(in their respective domain)?
f(x)=3x+2;g(x)=x+2/3
Click here to see answer by josgarithmetic(39617)

Question 1000277: 21-x/x+3=4

Click here to see answer by Alan3354(69443)

Question 1000258: Write a function to describe each of the following scenarios..
If 1 in. of rain is equivalent to 10 in. of snow, express the number of snow that is equivalent to T inches of rain
Click here to see answer by Cromlix(4381)

Question 1000257: Write a function to describe each of the following scenarios..
The number of cups of flour required for a triple batch of a recipe that calls for D cups per batch
Click here to see answer by fcabanski(1391)

Question 1000256: Write a function to describe each of the following scenarios..
The height of a tree in yards of you know that it is M ft. tall
Click here to see answer by fcabanski(1391)

Question 1000254: Write a function to describe each of the following scenarios..
The perimeter of a regular pentagon with side length G
Click here to see answer by solver91311(24713)

Question 1000367: State whether each of the following represents a direct or inverse variation, and find the constant of variation
Charles law state that the volume, V , of a gas increases proportionally as the temperature in Kelvin, T , increases if the pressure remains constant. At a temperature of 500 K, a given amount of gas occupies 6 m(cubed)
Click here to see answer by vleith(2983)

Question 1000364: Find the missing value for each variation
If Y directly proportional to X and Y = 5 when X = 1, find Y when X = 20
Click here to see answer by Cromlix(4381)

Question 1000363: Find the missing value for each variation
If Y varies inversely with X and Y = 4 when X = 2, find Y when X = 8
Click here to see answer by Cromlix(4381)

Question 1000470: Give the slope and the y-intercept of the line y=10x−10. Make sure the y-intercept is written as a coordinate.
Click here to see answer by rfer(16322)

Question 1000483: solve each equation by addition method
x/2+y/4=1
-x/4-y/8=1
Click here to see answer by MathLover1(20849)

Question 1000483: solve each equation by addition method
x/2+y/4=1
-x/4-y/8=1
Click here to see answer by MathTherapy(10551)

Question 1000482: solve each equation by addition method
x/3-y=2
-x/2+3y/2=-3
Click here to see answer by MathLover1(20849)

Question 1000524: Hello, could you please help me with this?
A helicopter that is 2000 meters above the ground descends at a rate of 2 meters per second. The altitude of the helicopter after t seconds is given by h(t)=2000-2t. I don't know how to figure what the range and domain are, or how to make a table and graph. Any help would be appreciated! Thanks
Click here to see answer by solver91311(24713)

Question 1000480: solve each system of equations by the addition method
10/3x+4y=-4
5x+6y=-6
Click here to see answer by ankor@dixie-net.com(22740)

Question 1000573: solve each system by either addition method or the substitution method
3y=x+14
2x-3y=-16
Click here to see answer by ikleyn(52777)

Question 1000606: Write an equation expressing the variation described; then use it to solve the problem
Find the sales tax, T, paid on purchases at the rate of 7% if tax varies directly with the total purchase price, P. How much sales tax is paid on a $495 computer purchase?
Click here to see answer by josgarithmetic(39617)

Question 1000608: Write an equation expressing the variation described; then use it to solve the problem
It take one person 18 hour to paint a fence. If the time, T, that it takes to paint a fence varies inversely with the number of painters, P, how long will it take four people to paint the fence?
Click here to see answer by josgarithmetic(39617)

Question 1000604: For each variation, find the Constant of variation and write the function rule
C is directly proportional to V and V = 9 when C = 6
Click here to see answer by josgarithmetic(39617)

Question 1000839: solve the system of linear equations
x+y=-6
-x+y=6
Click here to see answer by ikleyn(52777)

Question 1000839: solve the system of linear equations
x+y=-6
-x+y=6
Click here to see answer by MathTherapy(10551)

Question 1000843: andrea sells cell phones in sydney, but never on sunday. she is paid $3.500 a month plus 20% of her monthly sales. she needs tk earn at least $4,800 a month to pay for her rent, food, fun and other life essentials to afford her lifestyle, what amount of sales will andrea need to achieve?
Click here to see answer by ikleyn(52777)

Question 1000925: y is equal and greater than 0

Click here to see answer by fractalier(6550)

Question 1000961: The Celsius (C) and Kelvin (K) conversion of temperature is given by the formula, K= C + 273. If an acid solution is required to be kept between -10�C and 5�C, what is the range of temperature in Kelvin?
I am working in compound inequalities but this question just really confuses me. I dont even know where to start solving it.
Click here to see answer by fractalier(6550)

Question 1001050: solve a system of three linear equations with three variables
5x =5
2x+y =4
3x+y-4z=-15

Click here to see answer by Alan3354(69443)

Question 1001068: What is the y - intercept of the graph of y = 6 - 7?
Click here to see answer by EdenWolf(517)

Question 1001144: If the amount of paint varies directly with the area to be painted and 2 gal covers 690 ft(squared), how much paint (to the nearest tenth of a gallon) will it take to cover the remaining 970 ft(squared)?
Click here to see answer by josgarithmetic(39617)

Question 1001142: MILES TRAVELED: GALLONS OF GAS USED:
22 1
44 2
88 4
154 7
330 15
QUESTION:
How far can Mr. Blake travel using 40 gal of gas?
Click here to see answer by Theo(13342)

Question 1001145: Write the function f(x)=|x|; D = {-4,-2,0,2,4} as a set of ordered pairs
Click here to see answer by fractalier(6550)

Question 1001252: Find the intercepts and use them to graph the equation. y=2x-2
Click here to see answer by fractalier(6550)

Question 1001147: Graph each function
f(x)=|x + 2|; D = {-2,-1,0,1,2}
Click here to see answer by Edwin McCravy(20054)

Question 1001268: FIND EQUATION OF THE LINE PASSING THROUGH THE POINTS (-2,2) AND (8,-3)
Click here to see answer by fractalier(6550)

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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, 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