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

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Question 120544: How would I find the slope of the line through points (15,1) and (4,2)?
Click here to see answer by solver91311(16897)

Question 120548: How do I rewrite the equation 4x - 6y = -30 as a function of x?
Click here to see answer by solver91311(16897)

Question 120549: How do I write the equation of the line passing through (3,-7) and (-6,-7)?
Click here to see answer by jim_thompson5910(28598)

Question 120524: How would I find the slope and y-intercept of x = -8?
Click here to see answer by solver91311(16897)

Question 120578: How do I write the equation of the line that passes through point (-2,3) with a slope of -4?
Click here to see answer by broadway(2)

Question 120588: How would I graph the following equations: (a) y = 1/3x + 1 (b) y = -3x + 1 (c) y = 3x + 1 (d) y = -1/3x + 1?
Click here to see answer by solver91311(16897)

Question 120665: (4, -5) & (-2, -7)
Click here to see answer by rapaljer(4667)

Question 120693: i am having trouble solving problems similar to this: Write an equation of the line that passes throuhg the given point and is parallel to the given line.
(4,5),y=x+6. I would much appreciate your help with this problem and an explanation if its not too much trouble.
Thank you
Mike 13y.o.
Click here to see answer by jim_thompson5910(28598)

Question 120472: find the distance between (10,0)and (-6,0).
Click here to see answer by nabla(475)

Question 120734: How do you graph y = 6/5x-4?
Click here to see answer by jim_thompson5910(28598)

Question 120715: x > -4x + 15
Click here to see answer by rapaljer(4667)

Question 120716: (3n + 3) - 2(n - 1) < 7
Click here to see answer by rapaljer(4667)

Question 120682: Graph Y=-4x
Click here to see answer by rapaljer(4667)

Question 120746: 1. Susan and Joan are diving for golf balls in a large water trap. Susan recovers a golf ball every 0.016 hour while Joan recovers a ball every 0.025 hour. If both are working, then at what rate (in golf balls per hour) are they recovering golf balls?

2. The amount of farmland in the United States is decreasing by one acre every 0.00876 hours as farmland is being converted to nonfarm use. At what reate in acres per day is the farmland decreasing?
Click here to see answer by josmiceli(9698)

Question 120735: Solve each system by the addition method.
(1/8)x+(1/4)y=3
(1/16)x+(1/2)y=7

and
1.5x-2y=-0.25
3x+1.5Y=6.375
Click here to see answer by checkley71(8403)

Question 120714:
Solve and Graph:
4x=5y=-2 4y-x=11

and...

3x+y=2
-x-3y=6
Click here to see answer by checkley71(8403)

Question 120878:
which of the ordered pairs are solutions for x+3y=10
(7,1),(10,0),(1,-3),(-8,6)
Click here to see answer by jim_thompson5910(28598)

Question 120878:
which of the ordered pairs are solutions for x+3y=10
(7,1),(10,0),(1,-3),(-8,6)
Click here to see answer by checkley71(8403)

Question 120880: graph 3x+2y=6
Click here to see answer by checkley71(8403)

Question 120882: If y varies directly with x, and y=400 when x=1000, find the constant of variation k.
Click here to see answer by stanbon(57424)

Question 120881:
FIND THE SLOPE OF THE LINE PASSING THROUGH THE POINTS (-9,3) AND (4,-2)
Click here to see answer by checkley71(8403)

Question 120883: FOR THE EQUATION 9X-5Y=30, WHAT IS
THE SLOPE
THE Y-INTERCEPT
Click here to see answer by checkley71(8403)

Question 120883: FOR THE EQUATION 9X-5Y=30, WHAT IS
THE SLOPE
THE Y-INTERCEPT
Click here to see answer by stanbon(57424)

Question 120872: Find values for m and b in the following system so that the solution to the system is (-3, 4).
5x + 7y = b
mx + y = 22
Click here to see answer by solver91311(16897)

Question 120885: find the slope of any line parrallel to the line through points (18,4)and 3,5)
Click here to see answer by checkley71(8403)

Question 120885: find the slope of any line parrallel to the line through points (18,4)and 3,5)
Click here to see answer by stanbon(57424)

Question 120887:
write the equation of the line that passes through point (6,-7) with a slope of -2
Click here to see answer by checkley71(8403)

Question 120886: determine which 2 equations represent parallel lines.
y=5/4x+3
y=4/5x+5
y=4/5x-5
y=-5/4+5
Click here to see answer by checkley71(8403)

Question 120886: determine which 2 equations represent parallel lines.
y=5/4x+3
y=4/5x+5
y=4/5x-5
y=-5/4+5
Click here to see answer by solver91311(16897)

Question 120886: determine which 2 equations represent parallel lines.
y=5/4x+3
y=4/5x+5
y=4/5x-5
y=-5/4+5
Click here to see answer by stanbon(57424)

Question 120884: DETERMINE WHICH 2 EQUATIONS REPRESENT PERPENDICULAR LINES.
A)Y=9X-3
B)Y=1/9X+3
C)Y=-1/9X+3
D)Y=1/9X-3
Click here to see answer by checkley71(8403)

Question 120884: DETERMINE WHICH 2 EQUATIONS REPRESENT PERPENDICULAR LINES.
A)Y=9X-3
B)Y=1/9X+3
C)Y=-1/9X+3
D)Y=1/9X-3
Click here to see answer by stanbon(57424)

Question 120884: DETERMINE WHICH 2 EQUATIONS REPRESENT PERPENDICULAR LINES.
A)Y=9X-3
B)Y=1/9X+3
C)Y=-1/9X+3
D)Y=1/9X-3
Click here to see answer by ilana(307)

Question 120879:

complete the ordered pairs for the equation 2x+y=10(5, ),( ,10),( ,-2),(0, )
Click here to see answer by checkley71(8403)

Question 120897: Solve each of the following systems by graphing
2x - y = 4
2x - y = 6
What is the solution or where do they Intersect?
Click here to see answer by checkley71(8403)

Question 120897: Solve each of the following systems by graphing
2x - y = 4
2x - y = 6
What is the solution or where do they Intersect?
Click here to see answer by ilana(307)

Question 120937:

How would I solve y = x + 5 by graphing? y= 1/2x +4

Thanks!
Click here to see answer by checkley71(8403)

Question 120966: Solve each of the following systems by substitution
5x - 2y = -5
y - 5x = 3
Please help, I understand the addition method but not the substitution
Click here to see answer by nabla(475)

Question 120986: How would I graph these equations: (a) y = x + 3 (b) y = -1/3x (c) y = 1/3x (d) y = 3x?? If possible could you please show me how to graph all 4, because the more you show me, the easier it is for me to catch on. Graphing is very difficult for me.
Click here to see answer by ankor@dixie-net.com(15667)

Question 120991: What would be the slope and y-intercept in the following equation: x = -8? I got: Slope: 0; y-intercept: none.
Click here to see answer by bucky(2189)

Question 121056: IF A STUDENT MAKES $0.65 FOR EACH MISTAKE SHE FINDS IN A TEXT. WHAT IS THE EQUATION FOR DIRECT VARIATION?
Click here to see answer by MathLover1(6649)

Question 121056: IF A STUDENT MAKES $0.65 FOR EACH MISTAKE SHE FINDS IN A TEXT. WHAT IS THE EQUATION FOR DIRECT VARIATION?
Click here to see answer by rapaljer(4667)

Question 121003: Can you please which two of these equation represent perpendicular lines:
(a) y = 4/7x - 3 (b) y = 3x - 4/7 (c) y = -1/3x + 4/7 (d) y = 1/3x - 4/7?
Click here to see answer by rapaljer(4667)

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