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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 389518: how to solve (-10,-5) and (-8,-2) with the equation y-y1=m(x-x1)
Click here to see answer by haileytucki(390)

Question 389518: how to solve (-10,-5) and (-8,-2) with the equation y-y1=m(x-x1)
Click here to see answer by MathTherapy(1479)

Question 389511: I need to write an equation of the line containing the given points and parallel to the given line. Express answer in y=mx+b forn
(-9,6); 2x=3y+8 The equation of the line is y=

Thank you
Click here to see answer by mananth(12270)

Question 389507: I need to find the slope if it exists of the line containing the pair of points
(-14.3,15.7) and (-11.8,2.5)
Thank you
Click here to see answer by haileytucki(390)

Question 389542: how do you convert y=-4x+5 into general linear form
Click here to see answer by ankor@dixie-net.com(15745)

Question 389628: Determine the distance between x-intercept and z-intercept of the plane whose equation is 2x+9y-3z=18?
Click here to see answer by lawat(1)

Question 389637: what is the answer to this 5n+34=-2(1-7n)
Click here to see answer by checkley79(3056)

Question 389509: I need to find the domain of the function and I have no idea how to do so.
g(x)= 9/(2-3x)
A. x/x is a real number and x#9
B. x/x is a real number and x#2/3
C. x/x is a real number and x#0
D. x/x is a real numner and x is greater than or equal to 2/3
Thank you
Click here to see answer by robertb(4012)

Question 389869: What is the x- coordinate of the solution to the system of linear equations 3X+6Y=4 AND X-3Y=1,
?
Click here to see answer by ewatrrr(10682)

Question 389956: I need to find the slope-intercept equation of the line that has the given characteristics.
slope 4.3 and y- intercept (0,-4)
the slope-intercept equation is y=
Thank you
Click here to see answer by stanbon(57940)

Question 389959: Graph the equation by plotting points.
y=0
This looks simple but I really am not sure, I believe I just plot the 0 going horizontally but I am not sure.
Thank you
Click here to see answer by stanbon(57940)

Question 390155: 3x+y=2
4x+y=20
Click here to see answer by Fombitz(13828)

Question 390143: x-5y=-6
10y=2x+1
Click here to see answer by mananth(12270)

Question 390244: write and equation for the line going through the points (2,3) and (4,-2)
Click here to see answer by ewatrrr(10682)

Question 390482: x+2y-z=-7
2x-2y-z=6
x+y-2z=-6
Click here to see answer by stanbon(57940)

Question 390483: x+1/3y=-11
3/4x-1/2y=-15
Click here to see answer by emargo19(101)

Question 390591: Solving systems by graphing and substitution
y = 2x - 1
x + y = 2
Please show me if this problem is independent, dependent or inconsistent. More importantly I'd like to know the best way to solve future problems like this
Click here to see answer by Alan3354(31487)

Question 390612: Solve by substitution
x = y + 5
2x - 2y = 12
Please show me if this problem is independent, dependent or inconsistent. More importantly I'd like to know the best way to solve future problems like this''.
Click here to see answer by ewatrrr(10682)

Question 390608: Solving systems by graphing and substitution
3x - y = 4
3x - y = 0
Please show me if this problem is independent, dependent or inconsistent. More importantly I'd like to know the best way to solve future problems like this''.
Click here to see answer by josmiceli(9817)

Question 390643: What is the x-intercept in this equation: 3x+2y-10=0
Click here to see answer by ewatrrr(10682)

Question 390643: What is the x-intercept in this equation: 3x+2y-10=0
Click here to see answer by rfer(12726)

Question 390611: Solve by substitution
x-y=3
3x-2y=3
Please show me if this problem is independent, dependent or inconsistent. More importantly I'd like to know the best way to solve future problems like this''.
Click here to see answer by ewatrrr(10682)

Question 390844: I am trying to help my daughter understand how to solve a word problem but can't remember how to solve it myself -
"If sales of 30 cattle bring in a profit of $4500 and sales of 50 cattle bring in a profit of $12,500, and the profit model is linear, how much profit will the sale of 75 cattle bring in?"
$4,500 divided by 30 = $150 per head
$12,500 divided by 50 = $250 per head
my thought was that linear would mean 75 x $350 = $26,250 but that was not one of the multiple choice answers
Click here to see answer by stanbon(57940)

Question 390849: how do I solve for: 4xsquared+2y-1
Click here to see answer by solver91311(17059)

Question 391024: Solving Systems by Graphing and Substitution
x+3y=2
-x+y=1
Click here to see answer by ewatrrr(10682)

Question 391035: laura has $4.50 in dimes and quarters. She has three more dimes than quarters. How many quarters does she have?
Click here to see answer by checkley79(3056)

Question 391123: graph y=x-4 to y=1/3x-2
Click here to see answer by haileytucki(390)

Question 391168: If you are finding the line perpendicular to x + 3y = 5, what is the slope of the line?

Click here to see answer by solver91311(17059)

Question 391168: If you are finding the line perpendicular to x + 3y = 5, what is the slope of the line?

Click here to see answer by haileytucki(390)

Question 391172: need help finding the lcd in problems with rational equations for algebra 11

Click here to see answer by solver91311(17059)

Question 391179: how do I aolve and graph this linear inequality?
-x +2y (is less than or equal to) 4?
Click here to see answer by haileytucki(390)

Question 391121: use combinations and solve:
3y=5x+15
6x=2y-18
Click here to see answer by haileytucki(390)

Question 391237: A collection of nickels and dimes is worth $3.30. There are 42 coins in all. How many of each kind of coin are there?
this is the equation i wrote: .05x + .10y = 3.30
x + y = 42
Click here to see answer by josmiceli(9817)

Question 391261: solve the following system
6x-9y=8
14x-21y=18
Click here to see answer by Alan3354(31487)

Question 391303: hi well in class we are covering systems of linear equations in word problems and i need help
"the difference of two numbers is 16.the greater number is 5 less than 4 tiimes the smaller number.find the numbers"
thank you
Click here to see answer by haileytucki(390)

Question 391258: solve the following system
1/4x-1/6y=1
1/2x+1/3y=2
Click here to see answer by haileytucki(390)

Question 391304: . Calib received $50 for his birthday that he put in his piggy bank. Each week, he puts 2 more dollars in his bank so that the amount of money in dollars D in his bank is given by D = 2w + 50 where w is the number of weeks. Is this model linear, and, if so, what is the slope and y-intercept?

Click here to see answer by haileytucki(390)

Question 391221: x+3y=1 -3x-3y=-15
Click here to see answer by mananth(12270)

Question 391344: Solve the system algebraically. Check your work.
4x + 2y = 10
3x + 2y = 6
Click here to see answer by stanbon(57940)

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