Questions on Algebra: Linear Equations, Graphs, Slope answered by real tutors!

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Question 68475: Find the intercept
-x+3y=15
Please help to solve this
Thanks

Click here to see answer by rmromero(383) About Me 

Question 68476: Determine which two equations 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
Please instruct me on how to do this

Click here to see answer by funmath(2933) About Me 
Question 68476: Determine which two equations 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
Please instruct me on how to do this

Click here to see answer by rmromero(383) About Me 

Question 68474: Write the equation of the line with slope -2 and y intercept(0,0)
Then graph the line
Please help me on this problem
Thanks

Click here to see answer by funmath(2933) About Me 

Question 68574: Find the slope.
3x + 4y = 5
I am having trouble with this problem and need help. Thanks.

Click here to see answer by funmath(2933) About Me 

Question 68600: Write the equation of the line passing through (4,4) and (4,2).
Please help me with this problem.
Thanks

Click here to see answer by funmath(2933) About Me 

Question 68601: Given f(x)-5x^2-3x+1, find f(-2)
This is a function notation problem.
Please help

Click here to see answer by wgomero(28) About Me 

Question 68605: the solutions of line m are (3,3), (5,5), (15,15), (34,34), (678,678), and (1234,1234)
The solutions of n are (3,-3), (5,-5), (15,-15), (34,-34), (678,-678), and (1234,-1234)
Form the equations of both the lines?
What are the co-cordinates of the intersection of line m and n?
Write the co-ordinates of the intersection of lines m and n with the x axis.
Write the co-ordinates of the intersection of lines m and n with the y axis?

Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 68624: Find the inverse function of f.
1. f(x)=1+3x/5-2x

Click here to see answer by stanbon(75887) About Me 

Question 68706: 2x+3y=6
Please help me with the above formula. Please show how to graph using the intercept method.

Click here to see answer by rmromero(383) About Me 

Question 68678: A wedding cake meaures 2 feet high in the center and the diameter of the bottom tier is 12 inches. What is the slope of the cake?
Click here to see answer by rmromero(383) About Me 
Question 68678: A wedding cake meaures 2 feet high in the center and the diameter of the bottom tier is 12 inches. What is the slope of the cake?
Click here to see answer by stanbon(75887) About Me 

Question 68636: x=-3
y=2x + 1

Click here to see answer by tutorcecilia(2152) About Me 

Question 68777: Solve the system of equations using the addition (elimination) method.
If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is “no solution” or “infinitely many solutions.”
3x – 2y = 7
-9x + 6y = -21

Click here to see answer by jim_thompson5910(35256) About Me 

Question 68818: y=-x show how to graph

Click here to see answer by checkley71(8403) About Me 

Question 68839: Find the slope and y-intercept.
x=-8
please help me solve this

Click here to see answer by stanbon(75887) About Me 

Question 68842: Rewrite the equation 2x-3y=-6 as a function of x
Please help me on this to solve it.
A function notation problem
Thanks

Click here to see answer by stanbon(75887) About Me 

Question 68774: Find the equation, in slope-intercept form, of the line that passes through the points
(-7, -2) and (-4, 1).

Click here to see answer by checkley71(8403) About Me 

Question 68845: Find the slope of any line parrallel to the line through points (15,1)
and (4,2)
Please help me on this.

Click here to see answer by stanbon(75887) About Me 

Question 68841: One day the temperature at 8:00 am was 41F and by 1:00Pm the temperature was 61F. What was the hourly rate of temperature change?
Please help me do this I have no idea.
Thanks

Click here to see answer by Zoop(21) About Me 

Question 68782: solve these equation
1.2
2.4

Click here to see answer by rmromero(383) About Me 

Question 68775: Solve the system of equations using the substitution method.
If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is “no solution” or “infinitely many solutions.”
-4x + y = 8
2x + 3y = -1

Click here to see answer by rmromero(383) About Me 

Question 68776: Solve the system of equations using the addition (elimination) method.
If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is “no solution” or “infinitely many solutions.”
5x + y = -2
4x + 7y = 2

Click here to see answer by rmromero(383) About Me 

Question 68910: Find k if he following system of equations has a unique solution?
2x+(k-1)y=6
3x+(2k+1)y=9
find k if the following system of equations has a infinite solutions?
kx+3y=k-3
12x+ky=k
I have tried these problems but I'm lost I do understand what a unique and infinite is just don't understand how to do the problem?

Click here to see answer by Edwin McCravy(20055) About Me 

Question 68914: Find the slope of the graphed line.
The graphed line is a vertical line at the 3 points across the graph. I would appreciate your help with this. Thanks.

Click here to see answer by jim_thompson5910(35256) About Me 

Question 68959: If you were asked to solve 2x + 3=4x-12 by the x-intercept method, why would you not get the correct answer by graphing? I am really bad at this, and need to learn it step by step (like talking to a baby!)
Click here to see answer by checkley75(3666) About Me 

Question 68957: How do you graph the linear equation: x - 7 = 3y
Click here to see answer by checkley75(3666) About Me 

Question 68995: Write the equation of the line that passes through point (-2,3)with a slope of -4.
Please help me

Click here to see answer by Edwin McCravy(20055) About Me 

Question 68994: Write the equation of the line passing through (3,-7) and (-6,-7).
Please help me on this one

Click here to see answer by checkley75(3666) About Me 

Question 68993: Rewrite the equation 4x-6y=-30 as a function of x.
Please help me

Click here to see answer by checkley75(3666) About Me 

Question 68992: The equation y= print_coeff(m,1)x print_const(b)describes the amount of money a class of students might earn from candy sales. What are the slope and y-intercept of this line?
Please help me out.
Thanks

Click here to see answer by stanbon(75887) About Me 

Question 68991: Given g(x)= print_ coeff(m,1)x print_const(b), find g (print_coeff(n,1)a)
Please help me out on this problem.

Click here to see answer by stanbon(75887) About Me 

Question 68990: Rewrite the equation y=print_ coeff(m,1)x print_const(b)as a function of x.
Please help me ont this equation.
Thanks

Click here to see answer by stanbon(75887) About Me 

Question 68985: I am having problems understanding how to graph the inequality for the following problem. xis greater than or equal to -2y and x-3y<6. I have to graph the compound inequality but i don't understand this.
Click here to see answer by stanbon(75887) About Me 

Question 69046: write an equation in standard form of the line that has y-intercept=-4 and passes through (5,-3)

Click here to see answer by funmath(2933) About Me 

Question 68960: Solve the equation analytically. Check it analytically by direct substitution, and then support your solution graphically.
7/3(2x-1)=1/5x + 2/5(4-3x)
I am really bad at this. Can you please explain it to me step-by-step. I know that you probably cannot graph it, but also can you somehow explain that part to me as well?

Click here to see answer by jim_thompson5910(35256) About Me 

Question 69089: The length of a rectangle is 8 in, more than twice its width. If the perimeter of the rectangle is 64in, find the width of the rectangle.
Please help

Click here to see answer by Nate(3500) About Me 

Question 69088: One number is 12 more than another. The sum of the smaller number and twice the larger number is 39. Find the larger number.
Please help

Click here to see answer by Nate(3500) About Me 

Question 69086: Write the equation of the line that passes through point (-2,3) with a slope of -4.
Please help

Click here to see answer by Nate(3500) About Me 

Question 69085: Bob invested $20,000, part at 14% and part at 13%. If the total interest at the end of the year is $2,720, how much did he invest at 14%?
Please help me on this

Click here to see answer by Nate(3500) About Me 

Question 69084: Adult tickets for a play cost $11.00 and child tickets cost $10.00. If there were 23 people at a performance and the theater collected $246.00 from ticket sales, how many children attended the play?
Please help me to solve this

Click here to see answer by Nate(3500) About Me 
Question 69084: Adult tickets for a play cost $11.00 and child tickets cost $10.00. If there were 23 people at a performance and the theater collected $246.00 from ticket sales, how many children attended the play?
Please help me to solve this

Click here to see answer by jim_thompson5910(35256) About Me 

Question 69093: find the y intercept
-xn + 3y =15

Click here to see answer by josmiceli(19441) About Me 
Question 69093: find the y intercept
-xn + 3y =15

Click here to see answer by stanbon(75887) About Me 

Question 69110: how can i figure out
5x=-35

Click here to see answer by stanbon(75887) About Me 

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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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, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 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30331..30375, 30376..30420, 30421..30465, 30466..30510, 30511..30555, 30556..30600, 30601..30645, 30646..30690, 30691..30735, 30736..30780, 30781..30825, 30826..30870, 30871..30915, 30916..30960, 30961..31005, 31006..31050, 31051..31095, 31096..31140, 31141..31185, 31186..31230, 31231..31275, 31276..31320, 31321..31365, 31366..31410, 31411..31455, 31456..31500, 31501..31545, 31546..31590, 31591..31635, 31636..31680, 31681..31725, 31726..31770, 31771..31815, 31816..31860, 31861..31905, 31906..31950, 31951..31995, 31996..32040, 32041..32085, 32086..32130, 32131..32175, 32176..32220, 32221..32265, 32266..32310, 32311..32355, 32356..32400, 32401..32445, 32446..32490, 32491..32535, 32536..32580, 32581..32625, 32626..32670, 32671..32715, 32716..32760, 32761..32805, 32806..32850, 32851..32895, 32896..32940, 32941..32985, 32986..33030, 33031..33075, 33076..33120, 33121..33165, 33166..33210, 33211..33255, 33256..33300, 33301..33345, 33346..33390, 33391..33435, 33436..33480, 33481..33525, 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