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

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Question 168707: what does graph of interval [-4,10] look like
thank you ahead of time for your help
Click here to see answer by jim_thompson5910(35256)

Question 168746:
Click here to see answer by jim_thompson5910(35256)

Question 168762: I need help graphing y=3x+1
Click here to see answer by checkley77(12844)

Question 168761: I need help graphing y+3x+1
Click here to see answer by checkley77(12844)

Question 168960: How do you do this problem
2m=n-3
3m=2n-9
Click here to see answer by ankor@dixie-net.com(22740)

Question 168961: I don't understand how to do this problem?
3x+y=5
-2x+3y=4
Click here to see answer by josmiceli(19441)

Question 168961: I don't understand how to do this problem?
3x+y=5
-2x+3y=4
Click here to see answer by stanbon(75887)

Question 168961: I don't understand how to do this problem?
3x+y=5
-2x+3y=4
Click here to see answer by Electrified_Levi(103)

Question 168976: I need help on finding an equation of the line having given the slope and containing the given points.
Here is the equation:
m=6/7,(6, -3)
Click here to see answer by josmiceli(19441)

Question 168517: The heoght in feet, s, of a ball thrown straight up is given by the function
s(t)=-16t^2 + 56t+40, where t is the time in seconds. Find the maximum height reached by the ball.
Click here to see answer by ankor@dixie-net.com(22740)

Question 169006: Find an equation of the line containing the given pair of points.
(1/6, -1/3) and (5/6, 3)
Click here to see answer by Alan3354(69443)

Question 169070: I need to find the slope of a line parallel to each line. Rewrite the equation in the form y = mx + b if necessary.
1/3y = 2/3x - 4/3 ( I got an answer of 2 for the slope, but I'm not sure I did it right and there are no examples)
another one is 3y = -15x + 6 ( I got -5 for the slope) just let me know if they're right or what I'm doing wrong, please.
Thanks,
Robbie
Click here to see answer by nerdybill(7384)

Question 169066: 12a-5b=18
15a-5b=30
Click here to see answer by nerdybill(7384)

Question 169065: x=1/5y
3x+2y=26
Click here to see answer by checkley77(12844)

Question 169063: y=5x
2x+y=28
Click here to see answer by checkley77(12844)

Question 169064: x+3y=23
3x-2y=3
Click here to see answer by elima(1433)

Question 169300: i dont understand!!!!!!! please just give me the answers
Click here to see answer by Alan3354(69443)

Question 169399: the graphs of the following systmes are given in (a) through (d). Match each system with the correct graph:
3x-5y=-9
5x-6y=-8
Thank you! I'm confused
Click here to see answer by Alan3354(69443)

Question 169401: the graphs of the following systmes are given in (a) through (d). Match each system with the correct graph:
4x+5y=-2
4y-x=11
Thanks

Click here to see answer by Edwin McCravy(20054)

Question 169409: how would you graph and describe the solution x > -y?
Click here to see answer by gonzo(654)

Question 169462: A cannonball fired out to sea from a shore battery follows a parabolic trajectory given by the graph of the equation
h(x)=10x - 0.01x^2
where h(x) is the height of the cannonball above the water when it has traveled a horizontal distance of x feet.
a.) What is the maximum height that the cannonball reaches?
b.) How far does the cannonball travel horizontally before splashing into the water?

Click here to see answer by gonzo(654)

Question 169573: A goldsmith has two alloys that are different purities of gold. The first is three-fourths pure gold and the second is five-twelfths pure gold. How many ounces of each should be melted and mixed in order to obtain a 6-oz mixture that is two-thirds pure gold?
Click here to see answer by Mathtut(3670)

Question 169576: A car travels from one town to another at a speed of 32 mph. If it had gone 4 mph faster, it could have made the trip in one-half hour less time. How far apart are towns?
Click here to see answer by checkley77(12844)

Question 169572: Solve using the substitution method, the elimination method, or the graphing method.
y = 2/5x - 7, y = 2/5x + 4
Click here to see answer by checkley77(12844)

Question 169569: Find two numbers whose sum is 63 and whose difference is 5.
Click here to see answer by Alan3354(69443)

Question 169568: Solve the system of equations by graphing.
x + y = 4, x + y = -4
Click here to see answer by checkley77(12844)

Question 169574: An employer has a daily payroll of $1225 when employing some workers at $80 per day and others at $85 per day. When the number of $80 workers is increased by 50% and the number of $85 workers is decreased by one-fifth, the new daily payroll is $1540. How many were originally employed at each rate?
Click here to see answer by Mathtut(3670)

Question 169575: A student walks and jogs to college each day. She averages 5 km/h walking and 9 km/h jogging. The distance from home to college is 8 km, and she makes the trip in 1 hr. How far does the student jog?
Click here to see answer by gonzo(654)

Question 169567: Solve the system of equations by graphing.
-3x = 5 - y, 2y = 6x + 10
Click here to see answer by jojo14344(1513)

Question 169654:
my question is :

a student graphed a system of inequalities, shading only the region containong the solutions of the sytem. Write a system of inequalities corresponding to the students graph. Explain how you arrived at your answer.

there is no isbn because this is a module book question
Click here to see answer by jim_thompson5910(35256)

Question 169570: Solve.
y = 1.2x - 32.7, y = -0.7x + 46.15
Click here to see answer by checkley77(12844)

Question 169716: Using the following equation, make a table and a graph ...
y = -2x - 1
I am having trouble solving the equation, and graphing the results.
Thanks.
Click here to see answer by jim_thompson5910(35256)

Question 169947: what are the symbols if there is a + or a - signs.
Click here to see answer by Alan3354(69443)

Question 169948: x/6 + 3y/16 = 1
need the solve for y graphing
example:y = 4/3x +2 in excel spreadsheet
Click here to see answer by stanbon(75887)

Question 169965: I do not know how to solve this problem: 3x-7y=-21.
Click here to see answer by solver91311(24713)

Question 170006: I need to graph the function y =f(x) = x^2. How to do?

Thank you.
Click here to see answer by jim_thompson5910(35256)

Question 170094: Please help me, I don't understand!
Find the equation for each of the following items below:
a. A line that passes through (6,2) and has a slope of 2.
b. A line that passes though the points (2,4) and (8,16)
c. A line that passes through (7,3) and has a slope of -1.
d. A line that passes through (1, 1) and is perpendicular to the line 3x+4Y=12.
e. A circle with a radius of 9 and a midpoint at (3,3)
Click here to see answer by stanbon(75887)

Question 170142: y=3x-4
Click here to see answer by Alan3354(69443)

Question 170095: Could someone please help me with this problem? I don't understand. I have to show all work and I don't understand how to do it.
Solve for the following items:
a. The point on the x-axis that is equidistant (equal distance) from (12,6) and (8,2).
b. The distance between the points (6,4) and (18,4).
c. The distance between the points (1,4) and (19,6).
d. The midpoint between (12, 6) and (18, 4)
e. The midpoint between (-6, -8) and (23, 5)
Click here to see answer by checkley77(12844)

Question 170348: Rewrite the equation in standard form with integer coefficients;
4y=24+2x
Click here to see answer by Mathtut(3670)

Question 170365: I need help with a fairly simple equation that i just don't understand.
It's in pointY=A+B(X) form. I am given two sets of points which are, (-1,-6) and(4,8)
I tried -1+-6(4)=8 which obviously doesn't work.
Then I tried -6=2+=1(8) but there is no two in the equation, or am I trying to get a new number?
(-1,-6)(4,8)
in
Y=A+BX form.
Click here to see answer by checkley77(12844)

Question 170374: (x^-5x+6) (x^-4)
________ _______
(x^+x-6) (x^-x-6)
Click here to see answer by checkley77(12844)

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, 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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