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

Tutors Answer Your Questions about Graphs (FREE)

Question 729211: y=-2x+4
I don't know how to graph this
Click here to see answer by jim_thompson5910(35256)

Question 729317: graph a line that is perpendicular to the line represented by this equation?
y = −2x + 7
Click here to see answer by mananth(16946)

Question 729380: find the total amount that must be repaid in each of the following cases
a. a loan of $25 000 made on June 5 to be repaid on february 5 of the following year with interests of 14% per annum
b. a loan of $1 000 to be repaid after 6 years at 5% compounded annually

Click here to see answer by lynnlo(4176)

Question 729374: Day temp buns
1 25 67
2 23 61
3 20 49
4 21 54
5 28 65
6 32 75
7 31 72
8 33 77
9 27 64
10 25 60

a. Plot a scatter diagram of the data
b. Find the equation of the regression line using the least squares method
c. Interpret the meaning of the constant a, in the regression equation
d. Estimate the number of buns, the vendor sells on a day for which the temperature is 30�C
e. Calculate Pearson�s correlation coefficient and comment

Click here to see answer by lynnlo(4176)

Question 729372: set the feasible region of the following set of constraints
3y-2x greater or equal to 0
y+8x less or equal to 52
y-2x less or equal to 2
x greater or equal to 3
then find the maximum value of z=5x+2y and the values of x and y when this occurs
Click here to see answer by lynnlo(4176)

Question 729494: PLEASE Help.
Doctors order IV fluids that have to be adjusted. The formula is D = V/4T.
D is drip rate is drops per minute. V is the volume in cc. T is amount of time to be given in hours.
A.volume will be 1000cc. Rewrite the equation to determine the drip rate for various times T
B. burn victim may require faster rate and others may require slower. Make a table for 3 hour to 24 hours.
C. Make a graph from the table.
Thank you so much for your help.

Click here to see answer by KMST(5328)

Question 729491: PLEASE Help.
Doctors order IV fluids that have to be adjusted. The formula is D = V/4T.
D is drip rate is drops per minute. V is the volume in cc. T is amount of time to be given in hours.
A.volume will be 1000cc. Rewrite the equation to determine the drip rate for various times T.
B. Make a table with times ranging from 3 to 24 hours.
C. Make a graph using your table.
Thank you so much for your help.
Click here to see answer by lynnlo(4176)

Question 729741: find the equation of the line that is parallel to the graph of y=3x-4 and has y-intercept (0,-18)
Click here to see answer by lwsshak3(11628)

Question 729807: 1/x^2 lessthen or equal to 1

Click here to see answer by unlockmath(1688)

Question 730042: A. Plot f(x) and g(x) on the same graph. Do not use a t-table, rather use the points as defined on the quadratice equation.
f(x)=x^2+2x+3 g(x)=x^2-3x-9

B. These curves intesect at two points. Calculate the coordinates for these points. (Use equivalency)
Click here to see answer by lynnlo(4176)

Question 730063: I NEED HELP PLEASE W/ THIS QUESTION !!!
~ Given the line y= 2/5x + 6, find the equation of the line passing through the point (0,6) [ added : and perpendicular to the given equation]
Click here to see answer by richwmiller(17219)

Question 730119: Can someone help me with this please???
Write the slope intercept form of the line that pass through point A(-5,9) and is perpendicular to the line with equation 2y-3x+5=0
Click here to see answer by Alan3354(69443)

Question 730182: Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of each function. Is the vertex a maximum or minimum?
y=x^2-3x+2
Click here to see answer by lwsshak3(11628)

Question 730181: Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of each function. Is the vertex a minimum or a maximum?
y=3x^2-7
Click here to see answer by josgarithmetic(39616)

Question 730202: PLEASE Help!
Using the formula r=(1 + i/n)(^n) -1
r is annual interest rate as decimal
i is advertised interest rate as a decimal
n is the number of times the interest payments are compounded each year
Bank A 4.0 percent
Bank B 5.25 percent
Bank C 6.0 percent
Bank D 6.75 percent
(all compound 12 times a year).
A. Determine the effective interest rate for each.
B. Is it true that the higher the advertised rate the higher the effective rate?
c.if you rewrite the formula for a given value of n as 12 would the rewritten formula linear?
Thank you so much.
Click here to see answer by lynnlo(4176)

Question 730201: Help me PLEASE! I am very confused.
Force = Torque/Lever Arm (where torque is measured in foot-pounds) (lever arm is measured in feet and force is measured in pounds.
a. For a torque of 45 foot-pounds, make a table and graph of the forces required when using lever arms ranging from 6 inches to 3 feet.
b. is the relationship linear or nonlinear?
c. what is the difference in required force if you change from a 6 in long wrench to one that is 12 inches? What difference is there when going to a 2 foot to 3 foot wrench?
Thank you so much for the help!
Click here to see answer by lynnlo(4176)

Question 730183: Find the equation of the axis of symmetry and the coordinates of the vertex of the graph of each function. Is the vertex a maximum or minimum?
y=-2x^2+10x-1
Click here to see answer by lynnlo(4176)

Question 730244: The folowing system equations is shown below:
4x-2y=7
-3x+3y=10
Find the point of intersection of the equations.

Click here to see answer by lynnlo(4176)

Question 730568: y=3/2x Graph the function. State the domain and range. (there are absolutely NO examples in text book close to this and class was missed due to ASVAB testing) Please help, parents and Aunt are equally mistified!
Click here to see answer by lwsshak3(11628)

Question 730420: HELP!!! PLEASE!!! Been working on this for soo long and don't know what to do.
The ability of steel rod material to carry a load is related to the cross-sectional area of the rod. you can rewrite the expression that relates to the
cross-sectional area of the steel rod to the desired tension
(π (d^2))/4= (L)/(15,000 psi )
where d is the diameter of the steel rod in inches
and L is the load desired to be supported under tension, in pounds (L is divided by the safe working stress for medium steel rod, 15,000psi)
a. using the equation above, isolate the variable d to find an equation for the diameter of ateel rod needed for any load L.
b. draw a graph of your equation for loads from 0 to 100,000 pounds.
c. Is this graph linear or nonlinear?
THANK MUCH FOR THE HELP!!
Click here to see answer by ankor@dixie-net.com(22740)

Question 730655: explain how to tell whether the ordered pair (2,-1) is a solution of the equation y=-2x+3
Click here to see answer by stanbon(75887)

Question 730655: explain how to tell whether the ordered pair (2,-1) is a solution of the equation y=-2x+3
Click here to see answer by checkley79(3341)

Question 730776: Please help with my question, I can catch on fast if I am explained how to do it
Find the equation of the line, both in point-slope and slope intercept form going through the point (3,5) and parallet to the line with the equation
y=-x+5
Click here to see answer by ankor@dixie-net.com(22740)

Question 731072: Would you pls help me with this, I fell that is not very difficult but I don�t know what I am supposed to do: Write a description for two real-world quantities that are related by a function. Choose a variable for each value, write the function in function notation, and indicate the domain and range for the function.
(This is the 2nd time that I am submitting this problem without receiving any answer, could anyone help pls.)
Thanks

Click here to see answer by lynnlo(4176)

Question 731199: Hello,
I need some help graphing supply and demand equations.
Supply curve - P = $10 + $0.25Qs
Demand curve = P = $85 - $0.5Qd
I have calculated the equilibrium quantity at Q =100.
Can any one give me a hint on how to find the coordinates for the graph?(supply and demand curves from the equations above)
I will be grateful for any help.
Click here to see answer by stanbon(75887)

Question 731248: A line perpendicular to y=-1/2+3
Click here to see answer by Alan3354(69443)

Question 732103: I need help in the multiplication property and find the solution set for 7/4x is greater than or equal to -3/8
Click here to see answer by rfer(16322)

Question 732141: in the graph y+4= |x+3| what is the value of y when x is -2?
Would the answer be y= |-2+3|-4? Or am I doing it completely wrong?
Click here to see answer by fcabanski(1391)

Question 732169: y=-x^2+2x+4 find the y intercept when x equals 2 and 4
Click here to see answer by Alan3354(69443)

Question 731836: Sketch a graph for IxI=4

Click here to see answer by lynnlo(4176)

Question 731836: Sketch a graph for IxI=4

Click here to see answer by Alan3354(69443)

Question 732247: y greater than or equal to x-1
ive already replaced the inequality with an equal sign which now makes it
y=x-1 ive used the value of x=6 to find the y coordinate of the point.
y=6-1 which is 5 so my first point to plot is (6,5)
where do i go from here?
Click here to see answer by Alan3354(69443)

Question 732266: ''draw the graph of two equations 2x+y=3 and 3x+2y=1 on same graph find the point of intersection of these points and represent it by equation :) hoping you will help
Click here to see answer by MathLover1(20849)

Question 732328: I need assistance with this problem:
Find g(-2) for g(x)= x+3/x+2
(-2)+3/(-2)+2=1/0
My final answer is 1/0 and Undefined. Is this right?
Click here to see answer by lynnlo(4176)

Question 732330: I need help in solving this problem:
Find the slope of the line passing through (4, 8) and 4, -11).
I used to m= y2-y1/x2-x1 to solve the equation
-11-8/4-4=-19/0
My final answer is -19/0 and Undefined. Is this right?
Click here to see answer by lynnlo(4176)

Question 732331: I need help in solving this problem:
Find the equation of the line passing through (6, 3) and (6, -4).
I used to m= y2-y1/x2-x1 to solve the equation
-4-3/6-6=-7/0
My final answer is -7/0 and Undefined. Is this right?
Click here to see answer by lynnlo(4176)

Question 732333: I need help in solving this problem:
Find the equation of the line passing through (6, -4) and (8, -2).
I used to m= y2-y1/x2-x1 to solve the equation
-2-(-4)/8-6=2/2=1
y=mx+b
-4=x+b
-5=b
My final answer is y = 1x - 5. Is this right?
Click here to see answer by lynnlo(4176)

Question 732325: I need help in solving this problem: x - 2y is less than or equal to 0.
I used the substitution method to attempt to solve the problem as follows:
x - 2 y is less than or equal to 0
x - 2y = 0
0 - 2y = 0
y = 0/-2?
I don't know where I messed up and I still nee to graph the solution. Can you help me solve this problem?

Click here to see answer by lynnlo(4176)

Question 732236: Graph the solution set for the system of inequalities
a) 2x-y Greater of Equato to 4 ; 3x+2y>-6
b) x+y>3 ; x+y>-2
Click here to see answer by lynnlo(4176)

Question 732239: Graph the solution set for the system of inequalities
a) 2x-y Greater of Equato to 4 ; 3x+2y>-6
b) x+y>3 ; x+y>-2
Click here to see answer by lynnlo(4176)

Question 732509: for the function y=2x2+3, compute the average rate of change between -2 and x=5
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, 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, 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