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

Tutors Answer Your Questions about Graphs (FREE)

Question 74633: This is my problem if I make one mistake all my choices are so similar. Please help.
Rewrite the equation 4x – 10y = 11 as a function of x.
A)y = -2/5x +11
B)y = 2/5x -11
C)y = 2/5x -11/10
D)y = -2/5x + 11/10

Click here to see answer by checkley75(3666)

Question 74632: Given f(x) = 5x + 5, find f(–4).
Click here to see answer by checkley75(3666)

Question 74639: Graph the following:
y = x – 2
Click here to see answer by checkley75(3666)

Question 74640: Graph the following:
y = –x + 2
Click here to see answer by jim_thompson5910(28476)

Question 74635: Plot the point with coordinates (–2, –4).

Click here to see answer by jim_thompson5910(28476)

Question 74619: Write the equation of the line with x-intercept (12, 0) and y-intercept (0, 4).
Click here to see answer by jim_thompson5910(28476)

Question 74718: Solve each of the following systems by graphing.
2x-y=4
2x-y=6

Click here to see answer by Earlsdon(6287)

Question 74722: Solve each of the following systems by graphing.
3x-6y=9
x-2y=3

Click here to see answer by jim_thompson5910(28476)

Question 74722: Solve each of the following systems by graphing.
3x-6y=9
x-2y=3

Click here to see answer by checkley75(3666)

Question 74719: Solve each of the following systems by graphing.
x-2y=8
3x-2y=12

Click here to see answer by jim_thompson5910(28476)

Question 74748: How would I solve for y in this equation? x= 3y + 5
Click here to see answer by jim_thompson5910(28476)

Question 74744: find the slope of the line through the given points, if the slope is ubdefined, please state
(4,1) and (1,4)
(-3,-5) and -1,-2)
(-7,-5) and (5, -6)
Click here to see answer by jim_thompson5910(28476)

Question 74711: Graph the equations:
y = –x + 2
y = x + 2

Click here to see answer by checkley75(3666)

Question 74717: Graph the following inequalities.
4x + y "this symbol > with one line under it" 4

Click here to see answer by bucky(2189)

Question 74602: Find an equation of the circle of radius 4 that is tangent to both branches of the graph y=|x|

Thanks!
Click here to see answer by scott8148(6628)

Question 75011: find the x and y intercepts and graph 2x+3y=4
Click here to see answer by checkley75(3666)

Question 75012: garph f(x)= 3/2x-2 what is domain and range
Click here to see answer by stanbon(57203)

Question 74958: The band is selling bags of cookies as a fundraiser. they will sell chocalate mint cookies for $2.00 a box and oatmeal raisin cookies for $3.00 a box. after 1 day they had sold $135.00 worth of cookies.
i) define your varibles (what are they and what do they represent?)
ii) write an equation in standard form that represents this situation.
iii) write the equation in slope-intercept form.
iv) make a graph that represnts this situation.
v) list two combinations of cookies types that result in
$135.00 worth of cookies.
vi) what are the x- and y- intercepts, and what do they mean?
vii) how would the equation change if they had sold $180.00 worth of cookies instead?
viii) draw the new line on the same graph as the original.
ix) how does the new graph compare to the original?
Click here to see answer by ankor@dixie-net.com(15622)

Question 75161: How do you identify horizontal and vertical asymptotes of graph functions?
Click here to see answer by checkley75(3666)

Question 75239: I need to find the slop of any line perpendicular to the line through points (0,5) and (-3,-4)
Click here to see answer by tutorcecilia(2152)

Question 75249: L has y-intercept (0,-3) and is parallel to the line with equation y=2/3x+1
Click here to see answer by tutorcecilia(2152)

Question 75263: I need to graph this problem:
slope: -3/4;y-intercept: (0,8)
Click here to see answer by Earlsdon(6287)

Question 75170: Solve this system by graphing.
x>2+y
y>1
I got this when it was explained, so I don't know why I don't understand it now.
Click here to see answer by ankor@dixie-net.com(15622)

Question 75295: Graph this equation 3 ways 2x+3y=1
Click here to see answer by rmromero(383)

Question 75403: Find the slope of the line passing through the points (1, 1) and (3, 3).
Click here to see answer by checkley75(3666)

Question 75311: Please help to complete the square and graph :
y = x^2 + 2x - 1
thank you
Click here to see answer by ankor@dixie-net.com(15622)

Question 75386: Pleas help with the problem below. I really appreciate your help.
A trolley company has an average of 800 riders per day, at a fare of $2.25 per ride. They conducted a survey and found that they will lose approximately 40 customers per day for each $.25 increase in fare.
a) Let the number of riders be a function of the fare charged. Graph the function and find the slope of the graph.
b) If the trolley company was to eliminate the fare, ($0 or free fare), how many riders will they have each day?
c) If the trolley company raises the fare too high, no one will be willing to ride. Starting at what price (of the fare) will no one be willing to ride?
Click here to see answer by josmiceli(9645)

Question 75368: Please help with the following problem. Thanks so much for your help! I really appreicate it.
It is approximately 480 miles from New York to Virginia. On a good day, a driver can average approximately 60 miles per hour. Answer the following questions using the information above.
a) How far have you traveled after 3 hours?
b) How far have you traveled after 4 hours?
c) How far have you traveled after t hours? Explain by writing a linear function that expresses the distance traveled, d, as a function of time, t.
d) How far will you have left to travel to reach Virginia after you have traveled 3 hours?
e) How far will you have left to travel to reach Virginia after you have traveled 4 hours?
f) How far will you have left to travel to reach Virginia after you have traveled t hours? Explain by writing a linear function that expresses the distance to be traveled to reach Virginia, s, as a function of time, t.
Click here to see answer by josmiceli(9645)

Question 75342: please solve this equarion y=2/3x-1
Click here to see answer by tutorcecilia(2152)

Question 75364: Explain what it means to solve a system of linear equations?
Click here to see answer by Earlsdon(6287)

Question 75532: i need help in math because there is a serious math taks test coming up and im bad in math please im counting on you pppppppppppppppppppppppllllllllllllllllllllllllllllllllllleeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaasssssssssssssssssssssssssssssssssssssssssssssssssssssssssssseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
your friend essy!
Click here to see answer by chitra(359)

Question 75595: Solve the system by graphing.
4x + 4y = 4
x + y = 1
Click here to see answer by stanbon(57203)

Question 75594: Solve the system by graphing.
3x – y = 1
3x – y = 2

Click here to see answer by jim_thompson5910(28476)

Question 75478: Multiply the following.

(x/3 + 3/4)(3x/4 – 3/5)
This one is different and it contains fractions. Please help me?
Click here to see answer by ankor@dixie-net.com(15622)

Question 75619: Y<3x^2-18x+2
Vertex:
-b/2a = -(-18)/ 2(3) = 3

3(3)^2-18(3)+2 = 27-54+2= -25

Roots:
-(-18) +/- (radical) 324-4(3)(2) / 2(3)
18 +/- (radical) 300 / 6
= 5.87 , 0.11 (about)

Click here to see answer by stanbon(57203)

Question 75621: 5x + 3y = 12 If x is 1 then what is y
Click here to see answer by jim_thompson5910(28476)

Question 75620: 2x + 3y = 6 If x is 2 then what is y
Click here to see answer by jim_thompson5910(28476)

Question 75633: find the slope and y-intercept of the line which is the graph of the equation
2y=5(x+1)
Click here to see answer by checkley75(3666)

Question 75633: find the slope and y-intercept of the line which is the graph of the equation
2y=5(x+1)
Click here to see answer by bucky(2189)

Question 75637: When you want to graph rational functions what two things do you look out for?
Click here to see answer by Edwin McCravy(8878)

Question 75653: solve by graphing linear inequalities
3x-y<2
x+y>2
Click here to see answer by jim_thompson5910(28476)

Question 75654: The sum of two numbers is 112. The second is 7 more than 4 times the first. What are the two numbers?
Lane invested $14,000 part as 15% and part at 2%. If the total interst at at end of year was $1060 how much did she invest at 15%?
Click here to see answer by checkley75(3666)

Question 75691: Match the graph with the correct equation on the right.
I duplicated the graph with points (-19, 20)and (20, -19)I am not sure this is correct but the line is showing exactly what the graph is in the book.
The equations are
a)y=-x^2+1
b)y=2x
c)y=x^2-4x
d)y=-x=1
e)y=-x^2+3x
f)y=x^2+1
g)y=x+1
h)y=2x^2
Thanks for your help.
Click here to see answer by bucky(2189)

Question 75698: For each equation in exercises 29-34, find the x- intercepts.
y= x^2 +x -6
I am not sure what I am doing wrong but I cannot seem to get this one. Please help. Thanks.
Click here to see answer by Earlsdon(6287)

Question 75697: For each equation in exercises 25 to 28, identify the axis to symmetry, create a suitable table of values, and sketch the graph (including the axis of symmetry).
y=-x^2+6x-2
I am needing some assistance with this problem. I am not quiet sure how to find ths symmetry and need further help. Thanks.
Click here to see answer by Earlsdon(6287)

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