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

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Question 163844: 94. Fahrenheit temperature. Water boils at 212�F.
a) Use the accompanying graph to determine the Celsius temperature at which water boils.
b) Find the Fahrenheit temperature of hot tap water at 70�C by solving the equation.
70 = (F - 32)

Click here to see answer by Alan3354(69443)

Question 164486: please assist me in understand the the next step to this problem
9y-2y less than or equal to 35
Click here to see answer by nerdybill(7384)

Question 164519: 5 >/ (greater than or equal to) - x - 7 (negative x minus 7)
Click here to see answer by jim_thompson5910(35256)

Question 164530: find the cordinates of the vertices of each figure after the given transformation is performed and graph the preimage and its image. trapozoid efgh with e(3,2),f(3,-3),g(1,-2)and h(1,1)reflected over the y-axis
Click here to see answer by jim_thompson5910(35256)

Question 164482: -5
Click here to see answer by themathprof(21)

Question 164467: calculate the y intercep by covering x. then do the same thing for x.
x+y=<140 < is suppose to be underlined
Click here to see answer by themathprof(21)

Question 164684: HELLO! could I please have help wit hmy math homework? The diections say decide whether the graphs of the two equations are parallel lines.
the question is : y=x+3 , y=x+6
THANK! for all the help you give! this helps ALOT!
Click here to see answer by Mathtut(3670)

Question 164708: The maximum hull speed, S, is directly proportional to the square root of the length of the water line, L, on a sailboat. A boat with an L of 16.5 feet can go 5.4 knots.
What is the variation constant?
This is the formula we came up with: 5.4=k(square root of 16.5)
We could not get any further. Thanks
Click here to see answer by ankor@dixie-net.com(22740)

Question 164777: Graph each function.
30. 3x-y=13
32. x to the second power-y=-4

Click here to see answer by jojo14344(1513)

Question 164863: write the slope-intercept form of the equation for the line passing through the given pair of points. (-2,-6) and (9,2)
Click here to see answer by Fombitz(32388)

Question 164863: write the slope-intercept form of the equation for the line passing through the given pair of points. (-2,-6) and (9,2)
Click here to see answer by padmameesala(42)

Question 164922: draw a graph of the following equations
a)y=3/2x-3
b)y=-x+4
c)y=2/3x+3
d)y=-4x-1
Click here to see answer by checkley77(12844)

Question 165026: 2x+3y=13
4x-2y=2
plot the simultaneous equations on a graph determine x and y
Click here to see answer by jojo14344(1513)

Question 165016: f(x)=1/4(x+3)^2+8
find the vertex, the line of symmetry, and the maximum or minimum value of F(x). Graph the function.

Is this correct
vertex (-3,8)
line symmetry -3
Maximum/minimum value 8
Minimum
I do not know how to graph the function.
Click here to see answer by nerdybill(7384)

Question 165160: how do you graph y=5
Click here to see answer by nerdybill(7384)

Question 165277: if (1/2, -2) is the midpoint segment of QP and the coordinates of P are (-5/2, 5)find the coordinates of Q.
Click here to see answer by padmameesala(42)

Question 165171: Find the equation of the line perpendicular to 3x � 4y = 9 and passing through (-2, -1). Write the equation in standard form, with all integer coefficients.

Click here to see answer by Alan3354(69443)

Question 165219: Solve the system of equations using the addition (elimination) method.
If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is �no solution� or �infinitely many solutions.�
4x � 3y = 1
-12x + 9y = 5

Click here to see answer by padmameesala(42)

Question 165173: Solve the system of equations using the addition (elimination) method.
If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is �no solution� or �infinitely many solutions.�
4x � 3y = 1
-12x + 9y = 5

Click here to see answer by elima(1433)

Question 165308: Solve the system of equations using the addition (elimination) method.
If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is �no solution� or �infinitely many solutions.�
6x + 2y = 2
3x + 5y = 5

Click here to see answer by Alan3354(69443)

Question 165470: Find the variation constant, and write a formula that expresses the indicated variation.
n varies directly as q, and n 39 when q 3. Find n
when q 8.
same here, can't quite get the hang of these.
Click here to see answer by stanbon(75887)

Question 165469: Find the variation constant, and write a formula that expresses the indicated variation.
c varies inversely as d, and c 5 when d 2.
I'm not grasping the concept here, please help.
Click here to see answer by gonzo(654)

Question 165511: From a worksheet.
Solve 2x^2=3x+2 by graphing. If exact roots cannot be found, state the consecutive integers between which the roots are located. I must show my work, and don't understand how to do this.
Thanks
Click here to see answer by vleith(2983)

Question 165536: This is 1 question with different parts.
Media Services charges $40 for a phone and $30/month for its economy plan. The equation c = 30t + 40 describes the total cost, c, of operating a Media Services phone for t months.
The total cost for 8 months of service is $280
If a customer has only $110 available, how many moths of service can she receive?
a)2 and 1/3
b)2 and �
c)2
d)3
Graph the equation c = 30t +40.

Click here to see answer by jojo14344(1513)

Question 165531: This is 1 question with different parts.
Graph the line containing the given pair of points and find the slope.
(3,0), -1,-5)
What is the slope of the line?
m = ___
(simplify your answer. Type an integer or a fraction. Type N if the slope is undefined.)

Click here to see answer by jojo14344(1513)

Question 165576: Solve then graph
4x ≥ 36
The solution is {x x ≥ 9}
I need help with the graphing on a number scale.
a)a scale with a solid dot that starts at 9 and goes to the right.
b)a scale with a solid dot that starts at 9 and goes to the left.
c)a scale with a dot that is not solid that starts at 9 and goes to the right.
d)a scale with a dot that is not solid that starts at 9 and goes to the left.
Please help me, I do not know which scale is correct.
Click here to see answer by Mathtut(3670)

Question 165575: Graph on a number line, where x is a real number.
-1 < x ≤ 2
a) a scale with 2 points the first is a solid dot that starts at -1 and goes to the left, the second is a dot that is not solid that starts at 2 and goes to the right. (there is a break between -1 and 2)
b) a scale with no break that starts with a solid dot at -1 and ends with a dot that is not solid on 2.
c) a scale with no break that starts with a dot that is not solid on -1 and ends with a solid dot on 2.
d) a scale with 2 points the first is a dot that is not solid that starts at -1 and goes to the left, the second is a solid dot that starts at 2 and goes to the right. (there is a break between -1 and 2)
Please help I have no idea which scale to choose. Thank you.
Click here to see answer by Mathtut(3670)

Question 165547: t - 1 > -11
The solution is {t t > -10}
The graphing is what I do not understand.
There are 4 options to choose from.
A scale that starts at -10 and goes to the left, at -10 there is a ) sign
A scale that starts at -10 and goes to the right, at -10 there is a ( sign
A scale that starts at -10 and goes to the right, at -10 there is a [ sign
A scale that starts at -10 and goes to the left, at -10 there is a ]
I have no idea which scale is correct. Please help.
Click here to see answer by Mathtut(3670)

Question 165616: Solve the following system of linear inequalities by graphing.
x + 2y <(has a line underneath) 3
2x - 3y <(has a line underneath) 6
Click here to see answer by elima4(15)

Question 165751: I am hoping you can help. I have to find an equation of the circle with center
and radius of .
The formula I am using is
I have .
Is this correct?
Click here to see answer by Edwin McCravy(20055)

Question 165758: Given that f(x)=4-x2, find f(x-2).
Working it out, I get
f(x-2) = 4-(x-2)2 = 4-(2x-4)= 8-2x
Is this correct?
Click here to see answer by allicat2008(3)

Question 165869: can someone please help with this:
Compare the graph of the given quadratic function f with the graph of y = x^2
f(x) = (x - 7)^2
Is it translated 7 units left, right, downward or upward.
Click here to see answer by tutorcecilia(2152)

Question 165885: can someone please help:
Graph the function.
y = -{-3-x}
Click here to see answer by tutorcecilia(2152)

Question 165988: I am having a hard time with this problem and hope you can help.
The Movies charges $10 per month for membership plus $2.50 per movie rental. Movies to Go charges $4 per movie rental. For what number of movie rentals per month is The Movies the less expensive option?
Would you set this problem up like 10 + 2.5 < 4x (10+2.5)?
Click here to see answer by ankor@dixie-net.com(22740)

Question 166096: are these pair of equations parallel, perpendicular or neither and show the formula how acheived this decision.

y=3x+4,y=3x-7
Click here to see answer by stanbon(75887)

Question 166094: How do I solve "Graph the equation" when the problem is x+y+2...Thanks, a confused Mom
Click here to see answer by jim_thompson5910(35256)

Question 166110: x + 3y = 15
solve for 'm' and 'b'.
3y = 15 - x / 3
Click here to see answer by midwood_trail(310)

Question 166110: x + 3y = 15
solve for 'm' and 'b'.
3y = 15 - x / 3
Click here to see answer by checkley77(12844)

Question 166136: FiND THREE SOLUTiONS TO THE EQUATiON
3x-y=11
Click here to see answer by edjones(8007)

Question 166132: y=2x+1

Click here to see answer by elima4(15)

Question 166299: y varies directly with x if y=16 when x=48
A: find the constant of variation,k, and write an equation for the direct variation.
B: find x when y=-27
Click here to see answer by Mathtut(3670)

Question 166347: find the equation
a line perpendicular to y=3x-2 and passing through (2,3)
Click here to see answer by Alan3354(69443)

Question 166346: find the equation
passing through (1,7) and (3,3)
Click here to see answer by Alan3354(69443)

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