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

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Question 625775: Find the slope, if possible, of the line passing through each pair of points.
(2,-1) and (6,3)
Click here to see answer by Maths68(1474)

Question 625775: Find the slope, if possible, of the line passing through each pair of points.
(2,-1) and (6,3)
Click here to see answer by lenny460(1073)

Question 625792: For the given equation, list the intercepts and test for symmetry.
y = x^3 - 216
I am having a hard time grasping this concept.

Click here to see answer by lwsshak3(11628)

Question 625829: Please help!! I know that this has been answered before, but I cant find it answered with my equation. My numbers are different and I dont know how to convert the equations using my numbers. Please Please Please Help!!
Suppose you are an event coordinator for a large performance theater. One of the hottest new Broadway musicals has started to tour and your city is the first stop on the tour. You need to supply information about projected ticket sales to the box office manager. The box office manager uses this information to anticipate staffing needs until the tickets sell out. You provide the manager with a quadratic equation that models the expected number of ticket sales for each day x. ( is the day tickets go on sale).
tickets = -0.3^2+6x+22

a. Does the graph of this equation open up or down? How did you determine this?

b. Describe what happens to the tickets sales as time passes.
c.Use the quadratic equation to determine the last day that tickets will be sold.

Note. Write your answer in terms of the number of days after ticket sales begin.

d. Will tickets peak or be at a low during the middle of the sale? How do you know?

e. After how many days will the peak or low occur?

f. How many tickets will be sold on the day when the peak or low occurs?

g. What is the point of the vertex? How does this number relate to your answers in parts e. and f?

h. How many solutions are there to the equation? How do you know?

i. What do the solutions represent? Is there a solution that does not make sense? If so, in what ways does the solution not make sense?

Click here to see answer by nerdybill(7384)

Question 626130: the ordered pair (8,6) is a solution for which equations ?
y=6x
y=8x
y=(2/3)x
y=(3/4)x
Click here to see answer by Edwin McCravy(20054)

Question 626101: What is the equation of a line passing through (�7, 7) and (�6, 9) in slope-intercept form?
Click here to see answer by jim_thompson5910(35256)

Question 626247: I have a linear graph. Y= 4 and X= -4. what is the estimate of f(2)

Click here to see answer by Alan3354(69443)

Question 626307: hey i have a question and it contains towards slope, it says slope -9/4 containing the points (0,-4). what is the equation of the line?
Click here to see answer by jim_thompson5910(35256)

Question 626365: solve each by the substitution method.
Y=2x+6
3x-2y=-11

x+3y=-3
2x+y=4
Click here to see answer by stanbon(75887)

Question 626486: graph y = 3x+4
Click here to see answer by jim_thompson5910(35256)

Question 626487: graph y = -2x-3
Click here to see answer by jim_thompson5910(35256)

Question 626488: Factor x^2 - 2x - 3
Click here to see answer by jim_thompson5910(35256)

Question 626482: find all the points having an x-coordinate of 1 whose distance from the point (-3,-6) is 5
Click here to see answer by Alan3354(69443)

Question 626498: How do you graph y= |-x-6|
Click here to see answer by jim_thompson5910(35256)

Question 626527: solve the system x+y=1 and y=2x+13 by graphing
Click here to see answer by jim_thompson5910(35256)

Question 626527: solve the system x+y=1 and y=2x+13 by graphing
Click here to see answer by ewatrrr(24785)

Question 626652: pls give me the complete solution
x-2y=5
x-2y=2
in slope-intercept method
Click here to see answer by ewatrrr(24785)

Question 626652: pls give me the complete solution
x-2y=5
x-2y=2
in slope-intercept method
Click here to see answer by Alan3354(69443)

Question 626671: An investor invested a total of 1500 in two mutual funds. One fund earned 7% profit while the other earned 2% profit. If the investor's total profit was $95, how much was invested in each mutual fund?
Click here to see answer by ewatrrr(24785)

Question 626734: For solving an algebra problem, what does y=mx + b. indicate?
Click here to see answer by jim_thompson5910(35256)

Question 626870: find the slope of the line containing the given pair of points. If the line is undefined, state so. Please be sure to show all of your work.
(1, -9) and (-2, -3)
Click here to see answer by reviewermath(1029)

Question 626871: Solve the problem. Please show all of your work.
A college has a stairway in the business wing that has steps that are 8 inches high and 9.2 inches across. What is the slope of the stairs?

Click here to see answer by reviewermath(1029)

Question 626923: the graph of the function h(x) is shown find the function values h(2),h(4), and h(5)
h(2)=
link to question here http://oi50.tinypic.com/120l7oh.jpg
Click here to see answer by psbhowmick(878)

Question 626937: (8,16) (4,0) (0,-16)
WITH THESE POINTS WHAT WOULD THE EQUATION BE FOR Y?

Click here to see answer by psbhowmick(878)

Question 626867: Find the x- and y-intercepts for the equation. Please show all of your work. Then graph the equation and submit your graph through the dropbox.
-x-3y=9
Click here to see answer by KMST(5328)

Question 626980: solve the inequality 4<-z-4<11. Give the result in set notation and graph it.
can someone please explain this to me. ty
Click here to see answer by stanbon(75887)

Question 626990: use the graph of the function to f to find f(0),f(1),and f(2)f(0)=
link to question http://oi49.tinypic.com/2mw6n0z.jpg
Click here to see answer by ewatrrr(24785)

Question 627020: solve the inequality |5x+10|>=15
a. (-infinity,-5] U [1,infinity)
b. no solutions
c.[1,infinity)
d.-infinity,-5)
Click here to see answer by solver91311(24713)

Question 626974: graph y < 3x+1
I dont understand how to do this. can someone show me? ty
Click here to see answer by jim_thompson5910(35256)

Question 627093: Solve 8x+10>82
Click here to see answer by jim_thompson5910(35256)

Question 627153: 3x-2y=0
x+2y=8
Click here to see answer by jim_thompson5910(35256)

Question 627056: use the graph to determine the domain and the range of the function choose the correct domain image link http://oi49.tinypic.com/33ttaqh.jpg
Click here to see answer by KMST(5328)

Question 627157: the elevation E, in meters, above sea level at which the boiling point of a certain liquid is t degrees Celsius is given by the function shown below 119.5? 120?
E(t)=1100(120-t)+500(120-t2 the 2 is a small one
At what Elevation is the Boiling point 119.5?
E(119.5)=blank meters
link to question image here: http://oi45.tinypic.com/ou9l35.jpg
Click here to see answer by solver91311(24713)

Question 627630: Write an equation in point-slope form of the line that passes through
the points (-3,-4) and (3,4).
Click here to see answer by jim_thompson5910(35256)

Question 627629: Write an equation in slope-intercept form of the line that passes
through the points (-2,-1) and (3,5).
Click here to see answer by ewatrrr(24785)

Question 627628: Write an equation of the line that is parallel to the given line
y = 2x + 3 and the given point (-4,1).
Click here to see answer by solver91311(24713)

Question 627628: Write an equation of the line that is parallel to the given line
y = 2x + 3 and the given point (-4,1).
Click here to see answer by ewatrrr(24785)

Question 627651: Referring to the figure,

write the equation of the horizontal line through the point (0,3).
write the equation of the horizontal line through the point (3,0).
write the equation of the vertical line through the point (0,3).
write the equation of the vertical line through the point (3,0).
Figure:http://www.tiikoni.com/tis/view/?id=93d9d4f

Click here to see answer by solver91311(24713)

Question 627219: If x+y<16 but x-y>6, where x and y are integers, what is the largest integral value of xy?
Click here to see answer by richard1234(7193)

Question 627845: what is the x and y if this pls show answer and the steps :) 1/2(x-y)=2
1/2(x+y)+1=0
Click here to see answer by ewatrrr(24785)

Question 627905: The variables x and y vary directly. Use the given values to write an equation that relates x and y:
x = 4, y = -16
Click here to see answer by ewatrrr(24785)

Question 628034: y=x^2-2
Click here to see answer by Alan3354(69443)

Question 628282: I need to find the equation of the line that is parallel to the graph of y=2x-1 and has a x- intercept (3,0)

and I the equation of the line is what and has to be written in slope intercept form
Click here to see answer by richwmiller(17219)

Question 628278: how to decide whether the lines given are parallel, perpendicular or neither
The line through (7,1) and (9,3)
The line through (6,4) and (4,6)

Click here to see answer by reviewermath(1029)

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, 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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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