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

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Question 939114: 5.7 quiz
3.) Find an equation of the line that passes through the two given points. Write the equation in slope-intercept form, if possible.
x | y
-4| 2
4| 0
8.) There is a linear relationship between a woman's height and the length of her radius bone. It can be stated this way: Height increases by 3.9 inches for each 1-inch increase in the length of the radius. Suppose a 62-inch-tall woman has a 10-inch-long radius bone. Use this information to write a linear equation that relates height h to the length r of the radius. Write the equation in slope-intercept form.
9.) Three months after cleanup began at a dump site, 880 cubic yards of toxic waste had yet to be removed. Two months later, that number had been lowered to 800 cubic yards.
(a) Find an equation that describes the linear relationship between the length of time m (in months) the cleanup crew has been working and the number of cubic yards y of toxic waste remaining. Write the equation in slope-intercept form.
(b) Use your answer to part (a) to predict the number of cubic yards of waste that will still be on the site one year after the cleanup project began.

Click here to see answer by josgarithmetic(39617) About Me 

Question 939161: The population P of a predator at time, t in months, is modeled by P%28t%29=10000%2B3000sin%28pi%2F12%29%28t%29. Find average rate of change of predator population for t=1 and t=2.
Click here to see answer by ewatrrr(24785) About Me 

Question 939187: If f%28x%29=%28x%29%5E2-4 and g(x)=x, find values of x for which (f+g)(x)=2
Click here to see answer by ewatrrr(24785) About Me 

Question 939061: 5.7 quiz
3.) Find an equation of the line that passes through the two given points. Write the equation in slope-intercept form, if possible
x | y
-4| 2
4| 0
8.) There is a linear relationship between a woman's height and the length of her radius bone. It can be stated this way: Height increases by 3.9 inches for each 1-inch increase in the length of the radius. Suppose a 62-inch-tall woman has a 10-inch-long radius bone. Use this information to write a linear equation that relates height h to the length r of the radius. Write the equation in slope-intercept form.
9.) Three months after cleanup began at a dump site, 880 cubic yards of toxic waste had yet to be removed. Two months later, that number had been lowered to 800 cubic yards.
(a) Find an equation that describes the linear relationship between the length of time m (in months) the cleanup crew has been working and the number of cubic yards y of toxic waste remaining. Write the equation in slope-intercept form.
(b) Use your answer to part (a) to predict the number of cubic yards of waste that will still be on the site one year after the cleanup project began.

Click here to see answer by stanbon(75887) About Me 

Question 939117: Examine the graph and consider trips more than 7,000 miles by a Boeing 777. Use a rate of change to estimate how the maximum payload decreases as the distance traveled increases.
Click here to see answer by Alan3354(69443) About Me 

Question 939047: _5x +4y=_16

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Question 939207: Examine the graph and consider trips more than 7,000 miles by a Boeing 777. Use a rate of change to estimate how the maximum payload decreases as the distance traveled increases.
http://www.webassign.net/tgintroalgp4/3-4-078.gif

Click here to see answer by TimothyLamb(4379) About Me 

Question 939212: There is a linear relationship between a woman's height and the length of her radius bone. It can be stated this way: Height increases by 3.9 inches for each 1-inch increase in the length of the radius. Suppose a 62-inch-tall woman has a 10-inch-long radius bone. Use this information to write a linear equation that relates height h to the length r of the radius. Write the equation in slope-intercept form.
Click here to see answer by TimothyLamb(4379) About Me 

Question 939358: How do you divide: sqrt%28x-1%29%2Fsqrt%28x%29 ?
Click here to see answer by josgarithmetic(39617) About Me 

Question 939285: A gardener needs 6 bushels of a potting medium of 40% peat moss and 60% vermiculite. He decides to add 100% vermiculite to his current potting medium that is 50% peat moss and 50% vermiculite. The gardener has 5 bushels of the 50% peat moss and 50% vermiculite moss mix. Does he have enough of the 50% peat moss and 50% vermiculite mix to make 6 bushels of the 40% peat moss and 60% vermiculite mix? Explain.
P.S. I am not good at English so it would help me a lot if you can answer this. Thank you.

Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 939400: How do I work and graph (-4, 6) and (4, -10) Show all work, detailing each step so I can work it and figure it out thank you
Click here to see answer by josgarithmetic(39617) About Me 

Question 939402: I need help. Write the equation in its logarithmic form. Assume y>0 and b>0
1. 3^2 = 9
2. 7^2 = 49
Please with solution. Thank you!

Click here to see answer by MathTherapy(10551) About Me 

Question 939463: Determine how many solutions exist for the system of equations 18x−3y=−9
y=−6x−9

Click here to see answer by ewatrrr(24785) About Me 

Question 939496: http://www.usatestprep.com/modules/gallery/files/113/11307/11307.png
Write an equation for the line graphed.
A. y = 2/3x - 3
B. y = 2/3x +3
C. y = 3/2x - 3
D. y = 3/2x + 3

Click here to see answer by ewatrrr(24785) About Me 

Question 939504: Which of the following statements best describes the graph of 3x - 2y = 4?
It is a straight line joining the points (6, 2), (5, 1), and (7, 3). It is a straight line joining the points (0, -2), (2, 1), and (-2, -5). It is a curve joining the points (3, -2), (2, 3), and (4, 1). It is a curve joining the points (0, 2), (-2, -1), and (4, 1).

Click here to see answer by josgarithmetic(39617) About Me 

Question 939549: http://i.imgur.com/SXEyaco.png


use the graphs of f and g to find each of the
following:
g( f(2))

Click here to see answer by josgarithmetic(39617) About Me 
Question 939549: http://i.imgur.com/SXEyaco.png


use the graphs of f and g to find each of the
following:
g( f(2))

Click here to see answer by stanbon(75887) About Me 

Question 939550: http://i.imgur.com/SXEyaco.png


use the graphs of f and g to find each of the
following:
(f°g)(-1)

Click here to see answer by josgarithmetic(39617) About Me 

Question 939548: http://i.imgur.com/SXEyaco.png
use the graphs of f and g to find each of the
following:
f(g(1))

Click here to see answer by MathLover1(20849) About Me 

Question 939542: graph the equation. y=-8x+2
Click here to see answer by stanbon(75887) About Me 
Question 939542: graph the equation. y=-8x+2
Click here to see answer by josmiceli(19441) About Me 

Question 939401: Select two variables, set up two equations and solve the problem below. The sum of two integers is 45. The larger is 3 less than three times the smaller. Find the two integers.
How do I find and work this problem please give details each step so I can work and understand how it's done. Thank you

Click here to see answer by lwsshak3(11628) About Me 

Question 939406: I need your help to evaluate the exponential function for the given x values. Thank you!
1. f(x) = 3^x ; x=0 and x=4
2. g(x) = 10^x ; x = -3 and x = 2
Please show solution to get a better understanding.

Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 939590: For the points given below, determine the slope of the line passing through the two points. Show all work, detailing each step, to ensure that I am able to follow your work.
The points: ( -4, 6) and (4, -10)
Please and thank you

Click here to see answer by josgarithmetic(39617) About Me 

Question 939596: For the points given below, determine the slope of the line passing through the two points. Show all work, detailing each step, to ensure that I am able to follow your work.
( -4, 6) and (4, -10)
The last one that gave opinion made no sense please someone tell what I'm to do thank you

Click here to see answer by Alan3354(69443) About Me 

Question 940180: Solve the system using elimination
x+2y=5
5x+3y=4

Click here to see answer by ewatrrr(24785) About Me 

Question 940476: Please help with this:
Graph y < 4
Thanks

Click here to see answer by Fombitz(32388) About Me 

Question 940600: How do I solve and graph system of inequalities y>3x +8 and y>= 4x?
Click here to see answer by stanbon(75887) About Me 

Question 940693: please solve this for me:
The square of X is equal to 4 times the square of Y.if X is 1 more than twice Y..what is the value of X

Click here to see answer by macston(5194) About Me 

Question 940692: can you draw me the graph of
y=absolute value of -2x+6
thnk you

Click here to see answer by macston(5194) About Me 

Question 940691: can you draw me the graph of
y=absolute value of -2x 6
thnk you

Click here to see answer by Fombitz(32388) About Me 

Question 940797: what is the domain of the function
y=(x+2)^2....
thnx

Click here to see answer by Fombitz(32388) About Me 

Question 940815: can you please draw me the graph of the function
y=absolute value of 2x+6

Click here to see answer by josgarithmetic(39617) About Me 

Question 940893: I need help with a math problem. See the question says to write an equation in slope-intercept form that is perpendicular to the line 2x - 5 = -11 and passes through the point (7,5)

Click here to see answer by josgarithmetic(39617) About Me 

Question 940925: 16.) Find the slope of the line that is perpendicular to the line 3x-5y=20.


Click here to see answer by MathLover1(20849) About Me 

Question 940951: find the slope and the y-intercept of the graph of the equation.
2x-1=y
slope m =
y-intercept (x,y)=


Click here to see answer by Fombitz(32388) About Me 

Question 940945: Find the slope m of the line passing through the given points,if possible. (If an answer is undefined, enter UNDEFINED.)
(-14,-16) and (-5,-16)


Click here to see answer by Fombitz(32388) About Me 

Question 940817: what is the range of the function
f(x)=1+sqrt of x

Click here to see answer by Fombitz(32388) About Me 

Question 941300: Find the distance from the point (6,1) to the graph of 2x-3y+7=0
Click here to see answer by josgarithmetic(39617) About Me 

Question 941525: How many of the following quadrilaterals could be thought of a type of rectangle?
Square, Trapezium, Rhombus, Parallelogram, Kite




I think answer is 2(Square and Parallelogram) but in the book answer is 1

Click here to see answer by jim_thompson5910(35256) About Me 

Question 941613: Solve by graphing
y=-x-1
y=2x-4

Click here to see answer by TimothyLamb(4379) About Me 
Question 941613: Solve by graphing
y=-x-1
y=2x-4

Click here to see answer by macston(5194) About Me 

Question 941612: Solve by graphing
x-y=-4
2x+3y=-3

Click here to see answer by TimothyLamb(4379) About Me 
Question 941612: Solve by graphing
x-y=-4
2x+3y=-3

Click here to see answer by macston(5194) About Me 

Question 941628: In 1995, there were 33.8 million cellular subscribers in the US. In 1999 there were 86 million.
a. Let x=5 represent 1995 and e=9 represent 1999. Find the average rate of change in the number of subscribers in the US.
b. Write a linear function that models the number of cellular subscribers in the US
c. Interpret the average rate of change and the y-intercept using a complete sentence and be specific to this problem.
d. According to the calculations, how many cellular subscribers will there be in 2012?
e. Is this a good estimation? Why or why not?

Click here to see answer by TimothyLamb(4379) About Me 

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, 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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, 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