Questions on Algebra: Systems of Linear Equations answered by real tutors!

Tutors Answer Your Questions about Linear-systems (FREE)

Question 284346: 1.Write one equation of a line that is perpendicular to x = -3
How would I find that out? where do I begin? I don't just want the answer.

Click here to see answer by richwmiller(9144)

Question 284343: y = 3x +7 and x + 2y = -10
a.Are the lines perpendicular? Explain why by comparing the slopes of the lines.
I just want a guide on how to begin to solve, I dont want the answer.
Click here to see answer by richwmiller(9144)

Question 284345: y = 3x + 7 and x + 2y = -10
a.Do the lines intersect? Explain why. If the lines do intersect, find the point of intersection.
I dont want the answer only a guide on how to begin to solve the answer.
Click here to see answer by richwmiller(9144)

Question 284370: How do i do this: Freshy's pizza shop is having trouble attracting new customers, so Freshy's owner wants to have a week long pizza special. Currently Freshy's makes a profit of $1000 per week. The special promotion will selll pizza's for $5 each, it will require paying for an additional employee must be paid $480 for the week, promotional advertising will cost $700, and it cost $3.50 to make each promotional pizza. How many pizzas must freshy's sell in order to make a profit at the end of the promotion?
Click here to see answer by richwmiller(9144)

Question 284424: x+y=7 and 2x+3y=19 can you solve this problem and what should I study to understand this problem.
Click here to see answer by Alan3354(31519)

Question 284424: x+y=7 and 2x+3y=19 can you solve this problem and what should I study to understand this problem.
Click here to see answer by Edwin McCravy(8999)

Question 284478: I need help with this particular problem 1/2x+y=4
x=0
Click here to see answer by nyc_function(2733)

Question 284572: -2(x+3)<-5
Click here to see answer by rfer(12730)

Question 284572: -2(x+3)<-5
Click here to see answer by richwmiller(9144)

Question 284682: How to solve a system with no solution and graph
EQ1
3x - 5y = -9
EQ2
5x - 6y = -8
Click here to see answer by richwmiller(9144)

Question 284734: I have tried to work this problem can you please help me.
2x<3y + 6
Click here to see answer by Theo(3504)

Question 284735: Please help me solve this equation:

Click here to see answer by Theo(3504)

Question 284834: suppose tom owns 2,000 shares of company X and 10,000 shares of company Y. The total value of tom's holdings of these two companies is $372,000.
Suppose tim owns 8,000 shares of company X and 6,000 of company Y. total value holdings is $400,000
write an equation for tom and tim's holdings. use variables X and Y to represent the value of shares of company X and company Y then need to show the value of share of company X and Y
Click here to see answer by Theo(3504)

Question 285000: y=2x-3
y=-2x+1
Click here to see answer by user_dude2008(1861)

Question 285046: I need make two equations for this problem. if there were 4 people out at a restaurant and their meal cost $30 per plate what is the two equations using X and y x is for the people
Click here to see answer by richwmiller(9144)

Question 285177: 5x-3y=23
x+y=3
Click here to see answer by richwmiller(9144)

Question 285287: 7x-8y=9
solve for y

Click here to see answer by alex224(8)

Question 285381: determine if the system has no solutions, one solutions, or many solutions.
2x+y=-8
-8x-4y=32

victoria_is_hawt@yahoo.com
Click here to see answer by user_dude2008(1861)

Question 285463: 3x + y = 12
y = 2x + 1
is this a linear equation?
Click here to see answer by edjones(7569)

Question 285544: Write a Systems of Equations for the sentence below:
"A rectangular parking lot has a perimeter of 310 meters. The length is 5 meters more than 4 times the width. What is the length and width?"
Thank you in advance.

Click here to see answer by checkley77(12569)

Question 285599: How would i put this into two equations.
1 gallon of milk cost $3 and a family of 4 buys 12 galoons a month. How much is being spent on milk for a month.
X= gallons of milk Y= amount spent per month
Click here to see answer by josmiceli(9817)

Question 285597: I need help to put this into two equations.
A family of 4 goes out to eat twice a month and each persons meal cost $30
How would i put that using X as number of people Y= total amount spent
Click here to see answer by Theo(3504)

Question 285973: y+4x=10
6x-y=20
Click here to see answer by richwmiller(9144)

Question 286048:
Click here to see answer by richwmiller(9144)

Question 286087: When the first equation is: y=5x-8 and the second equation is 5y=2x+6
how do you plug 5y=2x+6 into the first equation to solve?
thank you,
Wanda Mathis
Click here to see answer by richwmiller(9144)

Question 286099: Solve using substitution method
7x+2y=-30
x=42-8y
Click here to see answer by mgmoeab(32)

Question 286132: I do not know how to solve system equations using substitions with fractions. Do i multiply by a common denominator?
here is an example if you could solve it step by step for me:
7x-y=10
x=1/3y-2
i know the answer (4,18) but not how to get there. if you can help it would be greatly appreciated thank you.
Click here to see answer by ptaylor(2052)

Question 286110: y=5-4x
(5,_),(1,_),(-1,_)
Click here to see answer by user_dude2008(1861)

Question 286399: i need to find a linear function whose graph has a slope of -8 and y intercept (0,4)
Click here to see answer by checkley77(12569)

Question 286416: Solving in terms of one variable:
Solve each equation for x in terms of y
x-3y=-1
Click here to see answer by richwmiller(9144)

Question 286418: Solve using the
Substitution Method
3x+2y=13
x+y=5

Click here to see answer by jim_thompson5910(28715)

Question 286578: 2x+3y=13
y=x+1
in graphing method
Click here to see answer by nyc_function(2733)

Question 286847: Solve each system by the addition method. Determine whether the equations are independent, dependent, or inconsistent
4x +3y = 2
-12x – 9y = -6

Click here to see answer by richwmiller(9144)

Question 286998: please help me solve this equation.
3x+y=-3
2x+y=-1
Click here to see answer by richwmiller(9144)

Question 287249: a + b + c = 180
b = 3a c = 5a a=?
Click here to see answer by sharon1948(6)

Question 287579: Please help me solve the equation:
11-5(3-x)=-2(x+3)+6x
Click here to see answer by mananth(12270)

Question 287581: Solve each system of equations by graphing. Remember the form of the solution.
x+y=4
2x+y=5
Click here to see answer by richwmiller(9144)

Question 287580: Find the solution of the inequality:
-1 <= 4x-1/3 < 5
Click here to see answer by checkley77(12569)

Question 287780: Where do these 2 lines intersect?? -2x-2y=4 and 10x-4y=40
Click here to see answer by richwmiller(9144)

Question 287996: I have this quadratic equation and I can not figure it out; -0.2x squared + 12x + 11. I have to find the x and y coordinates. Help please.
Click here to see answer by richwmiller(9144)

Question 287946: If g(x) = √( x - 1), find all values of x for which g(x) = 6
I need help with this equation. Can someone explain the steps for solving it?
Thank you.
Carro
Click here to see answer by richwmiller(9144)

Question 288107: solve the systems by substitution x+2y=7
2x+2y=13
Click here to see answer by richwmiller(9144)

Question 288393: your brother starts out 10 minutes before you on a bike path and rides at a rate of 9mph. if you ride at a rate of 12mph, how long will it take you to catch up to him
Click here to see answer by richwmiller(9144)

Question 288398: the veterinary clinic charges $5 to immunize dogs and $3 to immunize cats. a total of 45 dogs and cats were immunized, and $195 in fees were collected. how many dogs were collected.
Click here to see answer by richwmiller(9144)

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