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

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Question 356047: I need help trying to solve this problem: describe the points of intersection of the lines whose equations are the following:
4x+5y=8
8x+10y=16
Click here to see answer by Fombitz(32388)

Question 356044: sin(X) + cos(x) -6(x) = 0
Solve for X.
Click here to see answer by Fombitz(32388)

Question 356206: How do I graph
2x squared -4x-y squared + 4y= 3?

Click here to see answer by Alan3354(69443)

Question 356423: Find the inverse of the one-to-one function & graph both the function & its inverse on the same set of coordinate axes.

y=5x
Click here to see answer by edjones(8007)

Question 356611: Nine is subtracted from a number, and then the difference is multiplied by 5.
The result is 75. What is the number?
Click here to see answer by mananth(16946)

Question 356611: Nine is subtracted from a number, and then the difference is multiplied by 5.
The result is 75. What is the number?
Click here to see answer by robertb(5830)

Question 356718: y= 1/2 x - 3. what is the slope?
the slope is 1/2
2. in the equation 5x + y = 1, m=? m=-5
3. In the equation y= 3x - 4, a point on the line is? (2,2)
4. The formula for slope of a straight line is 000?
5. Congruent polygons have?
6. Corresponding side mean that?
7. Measures of central tendency show how data are?
8. The solution to the system of equations y= 2x and y= x+3 is?
9. Change the equation, x-y =4 to the form y = mx + b?
10. What will I use to determine a graph is a function?
Click here to see answer by wild_rose(3)

Question 356762: An unidentified object moves along the s-axis, with displacement s = s(t) (meters), velocity v = v(t) (m/sec), and acceleration a = a(t) (m/s�). It so happens that the velocity and displacement are related by the equation v = sqrt(8s+16). Moreover, at the instant t = 0, the object is observed at s = 6. A) Show that a is constant, and show its value. B) Graph v as a function of s. C) Graph v as a function of t.
Click here to see answer by Jk22(389)

Question 356741: 1. The graph of y= a2 + 8a + 16 is?
2. Line AB is located at (5, 0) and (1,3). The slope is?
3. Line CD is located at (1,3) and (4, 2). The slope is?
4. The quadrants of the coordinate plane are numbered?
5. The values of X and Y in quadrant 2 are?
6. Factor 6ab -8b?
7. Factor (2x3y2 + 12xy)?
8. The difference between 2x2 + 4xy -4 and x2 -2xy -4 is?
Click here to see answer by Fombitz(32388)

Question 356772: find the vertex of the x and y coordinate, line of symmetry and maximum of f(x)
f(x)=-2x^2+2x+7
Click here to see answer by CharlesG2(834)

Question 356772: find the vertex of the x and y coordinate, line of symmetry and maximum of f(x)
f(x)=-2x^2+2x+7
Click here to see answer by Edwin McCravy(20054)

Question 356808: My problem would be i have to graph: 4x+y ≤ 6.
I found the x and y intercepts, (0,6) (3/2,0) but then as i try to verify my answer using slope intercept form
4x+y=6
4x+y-4x=6-4x
y=-4x/1+6 when i plot it this way my line is no longer strait. Am I doing something wrong? Any help would be appreciated thxs.
Click here to see answer by Fombitz(32388)

Question 167404: The table gives the median values of new privately owned U.S. homes for 1983 through 1997. In the table, t is the time (in years) with t=3 corresponding to 1983, and y1 and y2 are the median prices (in thousands of dollars) in the Northeast and the South, respectively.
T= 3, 4, 5, 6, 7, 8
Y1= 82.2, 88.6, 103.3, 125, 140, 149
Y2= 70.9, 72, 75, 80.2, 88, 92
T=9,10, 11, 12, 13
Y1= 159.6, 159, 155.9, 169, 162.6
Y2= 96.4, 99, 100, 105.5, 115
T= 14, 15, 16, 17
Y1= 169, 180, 186, 190
Y2= 116.9, 124.5, 126.2, 129.6
a) use the regression capabilities of a graphing utility to fit a cubic model to the median prices of homes in the Northeast.
b) Use the regression capabilities of a graphing utility to fit a cubic model to the median prices of homes in the South.
THANK YOU SO MUCH, IT MEANS A LOT! :)
Click here to see answer by Fombitz(32388)

Question 356872: I am having trouble with about two problems. Here is one of them...Please help!
c(x)= 0.02x^2 - 3.4x + 150
Click here to see answer by Fombitz(32388)

Question 356876: I am having trouble with the problem right here attempting to figure it out.
Graph: How does the graph of y = (x - h)^2 compare to the graph of y = x^2?
here is what I attempted... y = (3 - 7)^2 compared to the graph of y = 8^2
y = -16 y = 64
y = 4, 8
Click here to see answer by Fombitz(32388)

Question 356884: How to graph y=-3X
Click here to see answer by Fombitz(32388)

Question 356879: Graph the inequality: x - 2y < 4 if x > -3 and y ≤ 5
Click here to see answer by ewatrrr(24785)

Question 356931: I have a couple questions I have no idea how to answer. I hope this gets to you today, I'm already late with the assignment. I'm taking Elementary Algebra with The Art Institute of Pittsburgh, I'm going for a Bachelor's degree in digital photography; I really doubt that I will have to use these skills in my career choice but nonetheless I still have to answer them and understand them. The questions I'm having trouble with are graphing these equations,
1. Y = 2x � 8
2. 5x � 5 = 3x � y
3. Y = IxI � 5
4. 3x + 4 = 4x � 6
The number's of order are not accurate for the assignment, but the equations themselves are. I don't understand what it is I should do to find the answer. Please help!
Click here to see answer by jim_thompson5910(35256)

Question 356912: Solving Equations with Radicas and Exponents
Find all real solutions to this equation.
√(x+4)-2√(x-1)=-1
Click here to see answer by edjones(8007)

Question 36181: Find an equation for the line with slope 1/2 and y-intercept 3.
I came up with 2x-y=3. Is this correct?
Click here to see answer by robertb(5830)

Question 357108: Graphing Linear Equations
y=2x-4
Click here to see answer by jim_thompson5910(35256)

Question 357156: What is the x, y values for the eqautions y=-2x+7, and y=x^2-4x, I need to find the x, y values then plott onto a graph.
Donetta McCormick
Click here to see answer by jim_thompson5910(35256)

Question 357374: I have A(-3,-3)and B(5,1) graphed and need to find the distance to the nearest tenth of a unit between point A and B.
Click here to see answer by ewatrrr(24785)

Question 357381: how would I find the Slope Intercept From of this equation: 4x-5y=15?

Click here to see answer by ewatrrr(24785)

Question 357425: what is the y intercept for y=-2/3x-12
Click here to see answer by user_dude2008(1862)

Question 357579: Find an equation in slope-intercept form (where possible) for each line.
Through (-8,1) with undefined slope

Click here to see answer by neatmath(302)

Question 357891: why do f represent the graph of a function?
Click here to see answer by Fombitz(32388)

Question 358189: The problem says graph each equation using slope and y-intercept: y=3x+2. I just need one example to get going. Thanks
Click here to see answer by scott8148(6628)

Question 358189: The problem says graph each equation using slope and y-intercept: y=3x+2. I just need one example to get going. Thanks
Click here to see answer by 467598(1)

Question 358476: My worksheet says to Determine whether each relation is a function... how do i know what to look for when trying to see if it is a function?
1. y= 1/3x-5
2. y= 2[x]+3 [x] is the absolute value of x, no way to type that in
Click here to see answer by CharlesG2(834)

Question 358288: How would i graph (w+1)=2 .......Except the parenthesis are supposeed to be straight lines....
Click here to see answer by Fombitz(32388)

Question 358635: -9+3x=5x+7
Click here to see answer by ewatrrr(24785)

Question 358692: Find an equation of the line having the given slope and containing the given point. Express your answer in the form x=a, y=b, or y=mx+b
m=-2,(8,0)
The equation of the line is y=_________

Thank you.

Click here to see answer by user_dude2008(1862)

Question 358699: Find the intercepts and use them to graph the equation 6x +4y = 24
Click here to see answer by checkley77(12844)

Question 358731: Find an equation of the line containing the given pairs of points.
(-3,-2) and (-7,-5)
The equation of the line in slope intercept form is y=_________
(simplify)
Click here to see answer by solver91311(24713)

Question 358573: A suspension bridge with weight uniformly distributed along its length has twin towers that extend 85 meters above the road surface and are 1200 meters apart. The cables are parabolic in shape and are suspended from the tops of the towers. The cables touch the road surface at the center of the bridge. Find the height of the cables at a point 300 meters from the center. (Assume the road is level.
I can answer this question if I only knew how to turn the question into a function, which I do not. Help?
Click here to see answer by ankor@dixie-net.com(22740)

Question 358820: Trying to understand graphs of linear equations first time doing this. Slope: -1, y-intercept:2.
Click here to see answer by neatmath(302)

Question 358676: The function W(d)=0.112d approximates the amount, in centimeters, of water that results from d cm of snow melting. Find the amount of water that results from snow melting from depths of 18cm, 28cm and 95 cm.
Can you help me do this problem correctly?
Click here to see answer by ankor@dixie-net.com(22740)

Question 358884: how can you tell relations is a function on a graph?
Click here to see answer by neatmath(302)

Question 358908: how do i write the linear equation with the following information?
A line with slope of -3 goes through points (1,-2)??
Click here to see answer by mananth(16946)

Question 358929: solve by graphing if no solutin or infinite number, so state for the following: 2x -y = 8, and y = x + 4. I find no solution.
Click here to see answer by Alan3354(69443)

Question 358912: How do I graph y=-1/5x-2
Click here to see answer by Fombitz(32388)

Question 358964: find the intercepts and then use them to graph the equation
4x+y=8
Click here to see answer by Fombitz(32388)

Question 358674: Find the domain of function G(x) = 3/6-5x
Not sure where to go with this one.
Click here to see answer by Fombitz(32388)

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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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