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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 348919: Solve the system of equations.
x+6y=9
x=3-6y
Click here to see answer by Alan3354(31522)

Question 349007: Write the equation of the line passing through the points (-3,-2)and (-1,-1)
Click here to see answer by solver91311(17077)

Question 349011: write the equation of the line passing through the points (-99,4)and (127,4)
Click here to see answer by solver91311(17077)

Question 349008: write the equation of the line passing through the points (0,7) and(3,4)
Click here to see answer by solver91311(17077)

Question 349014: write the equation of the line passing through the point (-3,1) which is perpendicular to line 7y-5x-7=0
Click here to see answer by mananth(12270)

Question 349014: write the equation of the line passing through the point (-3,1) which is perpendicular to line 7y-5x-7=0
Click here to see answer by solver91311(17077)

Question 349098: How do I graph 2y-5x<13
Click here to see answer by mananth(12270)

Question 349098: How do I graph 2y-5x<13
Click here to see answer by stanbon(57967)

Question 349098: How do I graph 2y-5x<13
Click here to see answer by Theo(3504)

Question 349085: Multiply.
-4/3*(6/5)
Click here to see answer by Fombitz(13828)

Question 349181: The concession stand sells hot dogs and drinks during their high school foot ball game. John bought 6 hot dogs and 4 drinks and paid $6.70. Jessica bought 4 hot dogs and 3 drinks and paid $4.65. What is the price of a hot dog?
Click here to see answer by josmiceli(9817)

Question 349538: Part 1:
Suppose you need to solve a system of equations in which one equation represents a circle and the other represents a line. How many solutions can your system have? Select ALL that are possible.
0,1,2,3,4, infinitely many
Part 2:
How many solutions does the following system of equations have?
x2+y2=64
x=1
0,1,2,3,4, infinitely many
Click here to see answer by Theo(3504)

Question 349604: 6n=24 how do i work this problem

Click here to see answer by Fombitz(13828)

Question 349631: Solve by the substitution method
5x+3y=2
x=22-3y
Click here to see answer by Jk22(389)

Question 349640: Well I'm on chapter three of the Algebra 1 book. Stuck on Formula's?
I.e.

Solving for H...
A=bh
A=1/2h(b1+b2)
Help please. \=
Click here to see answer by Fombitz(13828)

Question 349457: A passenger trains speed is 60me/h and a freight train's speed is 40mi/h. The passenger train traels the same distance in 1.5 h less time than the freight train. How long does each train take to make the trip?
Click here to see answer by ankor@dixie-net.com(15746)

Question 349744: x-2y=6
3x-6y=18 how many solutions does this equation have
Click here to see answer by checkley77(12569)

Question 349856: What is the slope of (3,2.75)and (-2,-1)
Click here to see answer by solver91311(17077)

Question 349921: the slope of -3 and contains the point (o,3)
Click here to see answer by mananth(12270)

Question 349962: Fred, Tiger and Nancy all play a round of golg togehter. their combined score was is 223. Freds score was 3 more than Nancy, and tigers score was 7 more than freds. what was each persons score?
Click here to see answer by rfer(12730)

Question 349877: Crazy Sherry's Used Stereos prices their stereos at 40% above what they paid. How much did crazy sherry pay for a stereo that she is selling for $448?
Click here to see answer by rfer(12730)

Question 349964: I am being asked to "Find the linear functions satisfying": F(4)=3 F(-4)=11
I know the two problems should be set up as follows...
3=m(4)+b and 11=m(-4)+b
I also know that you have to find B first but, I don't know how to do this...
Click here to see answer by stanbon(57967)

Question 350022: I need help for this system , can you please help me? I will really appreciate it
1/x + 1/y =6
2x+y=3
I've tried to subtract y and then to solve the system but didnt work .then I 've tried to notate 1/x with a and 1/y with b, but I got stack because I didn't know what should I do with the second equation .
thank you for your help.
daniela
Click here to see answer by scott8148(6628)

Question 350151: Solve the system by substitution, elimination, or graphing:
x-3y=17
5x-15y=81
Click here to see answer by Fombitz(13828)

Question 350156: Solve the system by substitution, elimination, or graphing:
4x-3y=2
3x+3y=-9
Click here to see answer by CharlesG2(828)

Question 350230: write am equation of the line with the given slope and y intercept . Then grapgh it.
m= 5. (0,-3)
Click here to see answer by ewatrrr(10682)

Question 350420: Use substitution to solve the linear system
y=x-3
y=2x
Click here to see answer by jim_thompson5910(28715)

Question 350658: how do I solve 3x+5y+7z=75 for x,y and z?
Click here to see answer by Fombitz(13828)

Question 351033: How do I graph this?
2x < 3y + 6
Click here to see answer by mananth(12270)

Question 351049: (y^2-4)/y÷(y+2)/(y+7) I can not figure which way to correctly solve this problem. I need to divide and simplify.
Click here to see answer by edjones(7569)

Question 351032: How do I graph this?
y < 2x + 2
Click here to see answer by Fombitz(13828)

Question 351154: Problem 1. The sum of the digits of a two-digit number is 14. If the digits are reversed, the number is increased by 18. What is the number?
....
Problem 2. One number is less than another number. The sum of the two numbers is four times their difference. What are the numbers?

Click here to see answer by stanbon(57967)

Question 351262: What is the answer to 11/2x - 4/5x = 47/10
Click here to see answer by rfer(12730)

Question 351355: A company produces three types of athletic shirt. A dozen tank tops requires
1 hour on the cutting machine, 2 hours on the sewing machine, and 3 hours
on the packaging machine. A dozen shortsleeve
shirts requires 3 hours on
the cutting machine, 5 hours on the sewing machine, and 5 hours on the
packaging machine. A dozen longsleeve
shirts requires 6 hours on the
cutting machine, 6 hours on the sewing machine, and 8 hours on the
packaging machine. In one week, the cutting machine has a maximum of 21
hours that can be dedicated to these shirts, the sewing machine has a
maximum of 28 hours that can be dedicated to these shirts, and the
packaging machine has a maximum of 35 hours that can be dedicated to
these shirts. How many dozen of each shirt can this company produce in one
week assuming that the machines are used to maximum capacity?
Click here to see answer by stanbon(57967)

Question 351510: What does the solution of a system of linear equations represent? Explain.
Click here to see answer by Fombitz(13828)

Question 351511: How can you tell graphically whether a system is consistent, inconsistent, or dependent? Give an example of each type of equations.
Click here to see answer by Fombitz(13828)

Question 351546: What is the value of x in the system below?
5x + 6y =-24
2x + 3y = 15
Click here to see answer by Fombitz(13828)

Question 351658: 1/x+1/y=8
3/x-5/y=0
how do i solve this system of equations?
Click here to see answer by ewatrrr(10682)

Question 351937: x5y-z=16
3x-3y+2z=12
2x+4y+z=20
i need to solve using the linear combination. please help me i dont get it
Click here to see answer by stanbon(57967)

Question 351952: a piece of fabric 180 inches long is cut into two pieces such that 3 times the larer piece exceeds 4 times the smaler piece by 85 inches.. how large are the pieces?
I thought 3x+85+4y = 180
but i have not clue. help me please its for my daughter shes 13 i want to get ths for her.
Click here to see answer by jim_thompson5910(28715)

Question 351976: You want the cover of a sports media guide to show two photos across it's width, the cover is 6.5 inches wide, and the left and right margins are 3.75 each. The space between the photos is .5 inches, how wide should you make the photos?
Write an equation to model the problem.
Click here to see answer by checkley77(12569)

Question 352206:
Suppose you need to solve a system of equations in which both equations represent lines. How many solutions can your system have? Select ALL that are possible.
3, 0, infinitely many, 4, 1, 2
How many solutions does the following system of equations have?
-x-3y=3
x-6y= 5
Click here to see answer by sofiyac(695)

Question 352224: solve the following non-linear system of equations.
x^2 + 2y^2 = 3
x - y^2 = 0
Click here to see answer by jim_thompson5910(28715)

Question 352237: Find the domain and range of the function.
F(x)=x+1
Click here to see answer by Fombitz(13828)

Question 352237: Find the domain and range of the function.
F(x)=x+1
Click here to see answer by jim_thompson5910(28715)

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