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

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Question 396487: Need help please
Tell whether the ordered pair is a solution of the equation. x-2y=8; (-6, -7)
Click here to see answer by rfer(12662)

Question 396499: I do not understand this one at all and my son has 15 of these to do. Would someone mind helping me with this?
write the equation in function form. Then graph the equation. y-x=-1
Click here to see answer by richard1234(5390)

Question 396501: Help please
Find two consecutive integers that have a product of 20
Click here to see answer by Alan3354(30993)

Question 396501: Help please
Find two consecutive integers that have a product of 20
Click here to see answer by mananth(12270)

Question 396931: I'm working on the Linear Equations in my Alegbra book. I have a graph with a horizontal X line and a vertical Y line. There is a line that slopes down from left to right. My problem is asking me to find the slope, the y-intercept, and write the equation.
The line intercepts the Y line at 1, then the X line at 2. I figured the slope is -1/2 since {delta y = -2} & {delta x = 4}. I believe the y-intercept is just 2, but I'm totally questioning myself on this & have no idea how to write the equation. Can you help me please?
Click here to see answer by solver91311(16897)

Question 396838: What is the answer to this my daughters teacher got 1.25 she gets 5.25 who is correct? the algebra equation is 7(x-3)+29=3(x+2)+7
Click here to see answer by ankor@dixie-net.com(15656)

Question 396942: can you help me solve
x >-1 & y <-3

Click here to see answer by MathLover1(6634)

Question 396988: How do you know which side of an inequality to shade?
Click here to see answer by scott8148(6628)

Question 396996: The sum of two numbers is and the difference is . What are the numbers?

Click here to see answer by stanbon(57361)

Question 396989: when graphing a logarithmic function, what does a reflection across the x-axis of that function look like?
Click here to see answer by stanbon(57361)

Question 397259: Find the vertex, the line of symmetry, and the maximum or minimum value of f(x). Graph the function.

The vertex is ____. <--Type an ordered pair.
The line of symmetry is x=____.
The maximum/minimum value of f(x)=____.
Is the value, f(-1)=5, a minimum or maximum.
Graph.
Click here to see answer by ewatrrr(10682)

Question 397318: Part of the graph to a curve has equation y=x³-15/2x²+12x-18.
(a) Find the coordinates of the stationary point E.
(b) Find the coordinated of G.
G is on the X axis so Y=0.
So far I have that
y=x³-15/2x²+12x-18
so dy/dx of y=x³-15/2x²+12x-18= 3²-15x+12
Now, At SP, dy/dx=0
∴ 3x²-15x+12=0
÷3
x²-5x+4=0
(x-4)(x-1)=0
x=4 or x=1
Sub x=4 into x³-15/2x²+12x-18 and x=1 into x³-15/2x²+12x-18
4³-15/2(4)²+12(4)-18. 1³-15/2(1)+12(1)-18
64-120+48-18. 1-15/2+12-18
=-26. =-25/2

(4,-26). (1,-25/2)
Now I am compltely stuck.
Can someone please help me.

Click here to see answer by solver91311(16897)

Question 397324: y=1/3x + 4
Click here to see answer by Alan3354(30993)

Question 397643: graph the line described by y=2[x+4]-3. include a x/y table
Click here to see answer by stanbon(57361)

Question 397702: slope= 1/5 (2,-6)
Click here to see answer by Alan3354(30993)

Question 397702: slope= 1/5 (2,-6)
Click here to see answer by stanbon(57361)

Question 397729: can you graph y=+2+x
Click here to see answer by richard1234(5390)

Question 397828: write the equation of the line that contains the indicated pair of points. Express the final equation in standard form. (2,5),(8,12)
Click here to see answer by stanbon(57361)

Question 397826: find x if the line through (1,0)and (x,1) has a slope of 1/2.
Click here to see answer by ewatrrr(10682)

Question 397789: A. Solve
-What are the solutions?
x=____
B. Find the x-intercepts of
-What are the x-intercepts?
The x-intercepts are ____.
Click here to see answer by ankor@dixie-net.com(15656)

Question 397535: find the value of a that makes the ordered pair a solution of the equation.

y=3x+7; (-3,a)
2x+4y=14; (-5,a)
y=11-7x; (a,-10)
9x-5y=-9; (a-1,9)
Click here to see answer by ewatrrr(10682)

Question 397931: Find the intervals where the graph of the function f(x)=x^2-4 is above the x-axis.
Click here to see answer by stanbon(57361)

Question 397996: Sarah’s two student loans totaled
$12,000. One of her loans was at 6% simple interest
and the other at 9%. After one year, Sarah owed $855
in interest. What was the amount of each loan?
I got x+y=12,00 but what is the next step????
Click here to see answer by josmiceli(9686)

Question 398008: can you show me step by step cleary??
7x-2(3+4x)=19
Click here to see answer by richard1234(5390)

Question 397908: the graphs of the following systems are given in (a) through (d). Match each system with the correct graph.
4x+5y=-2
4y-x=11
Click here to see answer by Alan3354(30993)

Question 398036: graph and check to solve the linear system. 3x+y=5 -x+y=-7
Click here to see answer by mananth(12270)

Question 398203: suppope an equation of the ellipse. How to put the equation in standard form and sketch the ellipse
Click here to see answer by Alan3354(30993)

Question 398205: Sorry i just forgot to post the equation. Put the given equation of the ellipse in standard form.
9x^2+36y^2=324
Click here to see answer by robertb(4012)

Question 398149: find the area of a rectangle if three of its corners are (-0.1, -3.4), (-7.9, -3.4, and (-0.1, 6.8)
Click here to see answer by robertb(4012)

Question 398418: How do u find order triple solution from these; 5x-y+z=24
4x+2y-3z=3
x-3y+2z=11
Click here to see answer by Alan3354(30993)

Question 398418: How do u find order triple solution from these; 5x-y+z=24
4x+2y-3z=3
x-3y+2z=11
Click here to see answer by ewatrrr(10682)

Question 398545: how to graph 8x-10y=7
4x-5y=7
Click here to see answer by checkley79(3050)

Question 398540: (1,4),(7,-1)
Click here to see answer by checkley79(3050)

Question 398678: how do you solve this problem y^3=8-x
Click here to see answer by jim_thompson5910(28595)

Question 398738: Hi my name is Liz and I need help to solve this: y=5X-2 I need to solve for X first than for Y, so I can plot at least 3 points on my graph. Thank you
Click here to see answer by stanbon(57361)

Question 398744: How do you write an inequality of line AB that has point (4,8) and (-10,1) in standard form with integers?
Click here to see answer by stanbon(57361)

Question 398719: how would you graph
y=6/5x+8
Click here to see answer by Alan3354(30993)

Question 398719: how would you graph
y=6/5x+8
Click here to see answer by mananth(12270)

Question 398912: write equations for the vertical and horizontal lines passing through the point (-9,3)
vertical line:
horizontal line:
help!
Click here to see answer by lwsshak3(6513)

Question 399059: Find the slope of the line graphed below.
Points are (-4,-1) and (4,3)
Is the slope 4/8 ?
Click here to see answer by MathLover1(6634)

Question 399107: Find the slope if it exists
y=-3x+7
Click here to see answer by MathLover1(6634)

Question 399182: write the equation of the line passing through (1,-2),(5,-2), and (10,-2)
Click here to see answer by robertb(4012)

Question 399182: write the equation of the line passing through (1,-2),(5,-2), and (10,-2)
Click here to see answer by solver91311(16897)

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