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

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Question 1127392: Y=4 with a domain of x greaterthen or equal to 5
Click here to see answer by stanbon(75887)

Question 1127392: Y=4 with a domain of x greaterthen or equal to 5
Click here to see answer by ikleyn(52778)

Question 1127518: Through (-6, 8); perpendicular to 9x + 5y = 66. Write the equation in y = mx + b form. Please show all work.
Click here to see answer by josgarithmetic(39617)

Question 1127518: Through (-6, 8); perpendicular to 9x + 5y = 66. Write the equation in y = mx + b form. Please show all work.
Click here to see answer by greenestamps(13198)

Question 1127530: Determine the quadratic function f whose graph is given the vertex is (3,-2) and the other given point is (2,1)
Click here to see answer by FrankM(1040)

Question 1127558: The equation of a curve is y=3+4x-x^2.
Show that the equation of the normal to the curve at a point (3,6) is 2y=x+9.
Given that the normal meets the coordinate axes at points A and B ,find the coordinates of midpoint of AB.
Click here to see answer by greenestamps(13198)

Question 1127569: Solve the provide equations by the graphing method.
2x-3y=-6 And x+3y=-3
Click here to see answer by Alan3354(69443)

Question 1127598: change the exponential expression to an equivalent expression involving a logarithm.
e^x=15

Click here to see answer by Boreal(15235)

Question 1127606: Find the x- and y- intercepts of y=9x+26
x intercept: (___,____) y intercept: (____,_____)
Click here to see answer by MathLover1(20849)

Question 1127606: Find the x- and y- intercepts of y=9x+26
x intercept: (___,____) y intercept: (____,_____)
Click here to see answer by josgarithmetic(39617)

Question 1127605: Find the slope of the line that passes through the points (-1, -8) and (1, -14)
Click here to see answer by Alan3354(69443)

Question 1127643: A line with slope -2 that passes through the point (3, -3)
Click here to see answer by josgarithmetic(39617)

Question 1127643: A line with slope -2 that passes through the point (3, -3)
Click here to see answer by MathLover1(20849)

Question 1127669: Find the slope of the line that passes through the points (-1,-8) and (1, -14)
A. m=3
B. m=1/3
C. m= -1/3
D. m=-3
Click here to see answer by Alan3354(69443)

Question 1127672: 9x + y = 8 how to find the x intercepts
Click here to see answer by ikleyn(52778)

Question 1127672: 9x + y = 8 how to find the x intercepts
Click here to see answer by josgarithmetic(39617)

Question 1127672: 9x + y = 8 how to find the x intercepts
Click here to see answer by greenestamps(13198)

Question 1127672: 9x + y = 8 how to find the x intercepts
Click here to see answer by Alan3354(69443)

Question 1127715: Laura wants to hire a lawyer to file deeds for some properties she owns. The graph illustrates costs for her two choices of lawyers. Using the points on the graph, construct a table of results and two equations. Which lawyer is a better choice for her if she has 8 deeds? Which lawyer is a better choice if she has 2 deeds? Why? Over the long run, which lawyer is more cost-effective?
Click here to see answer by ikleyn(52778)

Question 1127780: I am struggling with this section. If you could show me step by step solving of a similar problem, I will try to solve my problem on my own. Thank you. The question reads as follows. Solve the following equation. Express all answers in interval notation....

Click here to see answer by MathLover1(20849)

Question 1127779: What is the shape of the graph:

Click here to see answer by Alan3354(69443)

Question 1127779: What is the shape of the graph:

Click here to see answer by ikleyn(52778)

Question 1127790: If the point
(x,-8)
is on the graph of the equation
9x-4y=-8
determine the value of x
Click here to see answer by josmiceli(19441)

Question 1127880: graph the equation by plotting points
x+y=5
Click here to see answer by ikleyn(52778)

Question 1127892: Use a calculator to graph the function. Then, using the graph, give three points on the graph of the inverse with the y-coordinates given.
f(x) = x^3 + x − 4, y = 0, 1, 2
Y= 0 (X, Y) ( ,)
Y= 1 (X, Y) ( ,)
Y= 2 (X, Y) ( , )

*I�m having trouble understanding the route that should be taken to solve the equation. Am I suppose to plug each given y variable into the equation which will result in finding the x intercepts or is there a complete different method needed?
Click here to see answer by greenestamps(13198)

Question 1127969: Two types of books (A and B) are to be placed on a library shelf of 96 cm length, with a maximum load of 20 kg. If the weight of each type of the books is 1 kg, and the thickness of type A is 6 cm whereas the thickness of type B is 4 cm, What is the number of books of each type that should be placed on the shelf so that the number of books is maximized?
Click here to see answer by josmiceli(19441)

Question 1128012: A piece of pottery is removed from a kiln and allowed to cool in a controlled environment. The temperature (in degrees Fahrenheit) of the pottery after it is removed from the kiln for various times (in minutes) is shown in the following table.
Time (min) Temperature (�F)
15 2400
20 2350
30 2250
60 1950
(a) Find a linear model for the temperature of the pottery after t minutes.
T(t) =
he problem.
The value of the slope means that the temperature is decreasing at a rate of �F per minute.
(c) Assuming the temperature continues to decrease at the same rate, what will be the temperature of the pottery in 3 hours?
�F
Click here to see answer by MathLover1(20849)

Question 1128008: Find the equation of the line, in slope-intercept form, that satisfies the given conditions.
The graph is perpendicular to the graph of
y = 5x − 1
and passes through the point whose coordinates are
(2, −2).
Click here to see answer by MathLover1(20849)

Question 1128043: perpendicular to x = -3, through (8, 7)
Click here to see answer by MathLover1(20849)

Question 1128014: A magazine company had a profit of $98,000 per year when it had 32,000 subscribers. When it obtained 38,000 subscribers, it had a profit of $117,500. Assume that the profit P is a linear function of the number of subscribers s.
(a) Find the function P.
P(s) =
(b) What will the profit be if the company obtains 50,000 subscribers?
$
(c) What is the number of subscribers needed to break even? (Round to the next highest subscriber.)
subscribers
Click here to see answer by addingup(3677)

Question 1128149: Draw the line through the point (-1, 3) that is parallel to the y-axis. Write the equation of this line and state its slope
Click here to see answer by MathLover1(20849)

Question 1128148: Draw the line through the point (-3, 4) that is parallel to the x-axis. Write the equation of this line and state its slope
Click here to see answer by MathLover1(20849)

Question 1128013: The rate at which water evaporates from a certain reservoir depends on the air temperature. The table below shows the number of acre-feet (af) of water per day that evaporates from the reservoir for various temperatures in degrees Fahrenheit.
Temperature (�F) (af)
40 960
60 1800
70 2220
85 2850
(a) Find a linear model for the number of acre-feet of water that evaporates as a function of temperature.
E(T) =
(b) Explain the meaning of the slope of this line in the context of this problem.
The value of the slope means that an additional af evaporates for a 1�F in temperature.
(c) Assuming that water continues to evaporate at the same rate, how many acre-feet of water will evaporate per day when the temperature is 75�F?
af
Click here to see answer by Boreal(15235)

Question 1128291: Draw the line through the point (-1, 3) that is parallel to the y-axis. Write the equation of this line and state its slope. show your work
Click here to see answer by josmiceli(19441)

Question 1128315: Graph 1/3x-1/6y=-2/3
using intercepts.
Click here to see answer by Alan3354(69443)

Question 1128412: Determine the slope of the line that passes through the points (-6, -4) and (7, -5)

Click here to see answer by Edwin McCravy(20054)

Question 1128412: Determine the slope of the line that passes through the points (-6, -4) and (7, -5)

Click here to see answer by greenestamps(13198)

Question 1128412: Determine the slope of the line that passes through the points (-6, -4) and (7, -5)

Click here to see answer by ikleyn(52778)

Question 1128454: I am looking to graph this equation, but I don't even know what's going on here - to the point where I have no idea what to research or how to solve this!
Can someone help me reach a conclusion and graph this?
{(k,2k)|k=0,+-1 ,+-2}
Thanks!

Click here to see answer by greenestamps(13198)

Question 1128598: Jordan is tracking a recent online purchase. The shipping costs state that the item will be shipped in a 24-inch long box with a volume of 2,880 cubic inches. The width of the box is seven inches less than the height.
Click here to see answer by ankor@dixie-net.com(22740)

Question 1128682: x+2y=7 graph co-ordinates
Click here to see answer by josmiceli(19441)

Question 1128696: If you work at a tire center and make $40 per day plus a 1.50 per tire you sell. Write an equation slope intercept form with tables and graph and slope and y intercept.
Click here to see answer by rothauserc(4718)

Question 1128728: Kin owes her friend $255 and plans to pay $5 per week. Select the equation of the function that shows the amount Kim owes after x weeks . then find and complete the interpretation of the intercepts of the function
Click here to see answer by josmiceli(19441)

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, 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, 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