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

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Question 823791: Find the solution to the system of equations.
x-3y-3z=-4
x+4y+3z=4
y+5z=26
Click here to see answer by TimothyLamb(4379)

Question 823974: examine the two lines given by 2x-8y=7 and -x+4y-1=0 to determine if they are parallel, perpendicular, or neither.
Click here to see answer by TimothyLamb(4379)

Question 824186: What point do the lines 2x+3y=4 and 6x+5y=8 intersect
Click here to see answer by TimothyLamb(4379)

Question 823009: pleaser help me make a problem or a description of the business for this
Click here to see answer by tommyt3rd(5050)

Question 824370: 20+4x2-8x1=0 26+4x1-6x2=0
Click here to see answer by Alan3354(69443)

Question 825129: x+10y=20
Solve for x in terms of y
Click here to see answer by fcabanski(1391)

Question 825199: A local movie theater charges $12 for an adult ticket and $10 for a child�s ticket. A group of
eight people spent a total of $86 on tickets to a movie. How many adults and how many
children were in the group?

a. Write a system of linear equations based on the description. Use x to represent the
number of adults and y to represent the number of children.
b. Solve the system using the elimination method. Show all the steps leading to your
answer.
c. Write 1-2 sentences to explain what the solution means for this situation.
Click here to see answer by TimothyLamb(4379)

Question 825300: Ok so
-3x+7y=-16
-9x+5y=16
Please help...
solve it with elimination method
Click here to see answer by jsmallt9(3758)

Question 825335: I am asked to write an equation of the line that passes through the given points. Use the first point to write the equation. Here is what is given: (0,0), (4, -12)
Click here to see answer by rfer(16322)

Question 825334: I am supposed to write an equation of the line shown...there is a graph below and it also says to use the right-hand point to write the equation. The graph has points of (0, 1) and (2,5)?
Click here to see answer by josgarithmetic(39617)

Question 825357: solve the system of equation:
3x=7-y
2y=14-6x
Click here to see answer by stanbon(75887)

Question 825365: the lines described by y = (8a-8)x and y = 1/5x are perpendicular. What is the value of a ?

Click here to see answer by stanbon(75887)

Question 825400: how do i Write y = �0.3x + 0.6 in standard form using integers.
Click here to see answer by TimothyLamb(4379)

Question 825639: x=300-y
x-200=y
Click here to see answer by TimothyLamb(4379)

Question 825676: How do you substitute .05m+20+20=.10(m-100)+15+20

Click here to see answer by stanbon(75887)

Question 825817: Given the equation, 3x + 9y = -8, write a second linear equation to create a system that :
Has exactly one solution. Explain your reasoning.
Has no solution. Explain your reasoning.
Has infinitely many solutions. Explain your reasoning.
Part 2 :
Interpret the meaning of the solution, if it exists, in the context of the graph of the following system of equations.
{ -5x + 2y = 10
{10x - 4y = -20
Click here to see answer by richwmiller(17219)

Question 825818: Students sold 275 tickets for a fundraiser at school. Some tickets are for children and cost $3, while the rest are adult tickets that cost $5. If the total value of all tickets sold $1,025, how many of each type of ticket was sold?

Click here to see answer by josgarithmetic(39617)

Question 825819: Students sold 275 tickets for a fundraiser at school. Some tickets are for children and cost $3, while the rest are adult tickets that cost $5. If the total value of all tickets sold $1,025, how many of each type of ticket was sold?

Click here to see answer by josgarithmetic(39617)

Question 825905: How do you solve this by using the addition or subtraction method? 8a+5b=9 2a�5b=�4
Click here to see answer by ankor@dixie-net.com(22740)

Question 825951: How do you write a linear equation?
Click here to see answer by math-vortex(648)

Question 826093: what value of x makes the equation true?
4(2x-4)=16
Click here to see answer by jim_thompson5910(35256)

Question 826266: 13x-4y=45
11x-12y=17
Click here to see answer by TimothyLamb(4379)

Question 826383: How many solutions are there to this system? Please provide all steps.
4x - 7y = 15
-8x + 14y = -30

Click here to see answer by TimothyLamb(4379)

Question 826630: I am supposed to solve by substitution. My equations are
3/4x + 1/2y = -7/12
and
x - y = -4/3
I have tried getting x alone on the first question but can't get the right answer
Click here to see answer by TimothyLamb(4379)

Question 826750: The following problems need to be changed into slope-intercept form:
13x - 11y = -12
9x - 7y = -7
x - 3y = 6
4x - y = 1
Click here to see answer by math-vortex(648)

Question 826839: The sum of three consecutive integers is 114. Find the largest of these integers.
Click here to see answer by lenny460(1073)

Question 827014: I am solving Linear systems algebraically of equation's using substitution. The question is x+2y=2 and 5x-3y=-29

Click here to see answer by TimothyLamb(4379)

Question 827111: Hello Im in need of help my daughter asked me to help her with her Hw and its been years since I've done this kind of math. Please help
Find the slope and y intercept of each linear equation.
Y-3x=15
Thanks
Click here to see answer by rfer(16322)

Question 827115: You own an ice cream shop. Your total cost for 12 double cones is $24 and you sell them for &2.50 each. How many cones do you have to sell to break even?

Click here to see answer by rfer(16322)

Question 827164: I am having trouble with simultaneous equations.
So how do you solve this simultaneous equation
[
2a-b+2c=-3
a+2b+c=7
3a-b-c=-8
]
Click here to see answer by TimothyLamb(4379)

Question 827125: 8x-y=4 and 5x+3y=17 solving by substitution.
Click here to see answer by TimothyLamb(4379)

Question 827247: how would you do this problem 2x-y=6 3x+4y=-2

Click here to see answer by stanbon(75887)

Question 827233: are the graphs of the line in the pair parallel? explain y=4x+6
-15x+3y=-45

Click here to see answer by LinnW(1048)

Question 827233: are the graphs of the line in the pair parallel? explain y=4x+6
-15x+3y=-45

Click here to see answer by stanbon(75887)

Question 827358: 2.50b+1.75h=97.50
Click here to see answer by Alan3354(69443)

Question 827462: Try to find the answer to 3(y-7)=27 if u don't mind
Click here to see answer by rfer(16322)

Question 827462: Try to find the answer to 3(y-7)=27 if u don't mind
Click here to see answer by Alan3354(69443)

Question 827536: 4x+3y=12 2x-5y=-20
Click here to see answer by TimothyLamb(4379)

Question 827595: This my system of linear equation problem.
3x+2y = -1
5x+4y = 0
I get this step right.
Expressing x as a function of y (from the first equation) x = (-1 -2y)/3
How do I get my answer from this cause this is where Im getting confused
5(-1+2y)/3+4y = 0

Click here to see answer by mananth(16946)

Question 826727: y=2x^2+1? when x=1
Click here to see answer by tommyt3rd(5050)

Question 827660: The sum of two numbers is 65 and their difference is 5. What are the two numbers? Write answer as an ordered pair: (x, y)

Click here to see answer by sheldonbbtrocks(115)

Question 827713: solve for x in the two equations below using substitution
12x - 3y = 36
24x + 3y= 180
Click here to see answer by richwmiller(17219)

Question 827744: y-5=3/2(x+4) in standard form
Click here to see answer by josgarithmetic(39617)

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