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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 557195: Solve the linear system by using substitution method in -5x+3y=51 and y=10x-8
Click here to see answer by kennyxx12(3)

Question 557462: Find the x- and y- intercept of the line.
-2x+7y=14
Click here to see answer by jim_thompson5910(35256)

Question 557464: Find the slope of the line that passes through the pair of points.
(-4,8)(7,-14)
Click here to see answer by jim_thompson5910(35256)

Question 557487: 2x+y=3
x-y=3
Click here to see answer by jim_thompson5910(35256)

Question 557490: x-3y=2
x+2y=-3
Click here to see answer by jim_thompson5910(35256)

Question 557499: x+3y=2
3x+9y=6
Click here to see answer by TutorDelphia(193)

Question 557493: 3x-y=11
2x+5y=13
Click here to see answer by TutorDelphia(193)

Question 557746: 3y-8x=-110
x-2y=30
Click here to see answer by mananth(16946)

Question 557977: don't know why the substitution method my head wont engage in. I am a college student , this on is driving me crazy x+y=4,y=3x using substitution method. in need of serious help.
Click here to see answer by Alan3354(69443)

Question 557986: 7a≤49
Click here to see answer by jim_thompson5910(35256)

Question 558150: find y when x=3
-4x+2y=1
Click here to see answer by mananth(16946)

Question 558274: 4x+2y=-18
5x+y=-27
What is the solution to the system of equations using linear combination or substitution.
Click here to see answer by mananth(16946)

Question 558527: i am in 8th grade algebra i need help
Click here to see answer by I<3myawesumfriends(1)

Question 558668: How many solutions does the system x + y = 3 and 2x + 2y = 5 have?
Click here to see answer by mananth(16946)

Question 558750: Would this problem to substitution or elimination?
{2x-y=-3
{x+3y=10
Click here to see answer by rapaljer(4671)

Question 558843: how the equation 5(-1+5y)/(-4)-7y = 8 arrive at this one 3y = -27?
Click here to see answer by bucky(2189)

Question 558889: how would i write (-3,9), m=8 in slope intercept form?
Click here to see answer by nerdybill(7384)

Question 558961: Please help me find x and y.
3x-54=y
3y-54=0
Click here to see answer by stanbon(75887)

Question 559024: I need help with this homework problem please! I cannot for the life of me figure it out. Thank you!
10= 2x/5 - 2
I am not sure how to type this out but it is 10 equals and then 2x is over a fraction bar and 5 is below the fraction bar, then to the right is a negative 2.
Click here to see answer by Alan3354(69443)

Question 559272: Solve Linear systems by multiplying first.solve the linear system using elimination.
7x+3y=-12
2x+5y=38
Click here to see answer by mananth(16946)

Question 559301: Hi, I will like to know if this is the answer for this Linear Equation:
-2x-y=-9
5x-2y=18
The answer that i got was (0,-9) I will like to know if that's right or not...
Click here to see answer by josmiceli(19441)

Question 559285: I've forgot how to get a problem back into standard form, where the problems I'm used to are in Ax + By = C ; Dx + Ey = F, I have a problem in Ax + By = C ; Fy = Dx + E
3x - 2y = -3
6y = 9x + 9
~Sorry for being lengthy.
Click here to see answer by Alan3354(69443)

Question 559666: For each of these funtion rules, explain what the constant term and the coefficient of the independent variable tell about the tables and graphs of each function
d= -9.8t+32
Click here to see answer by stanbon(75887)

Question 559667: write a rule for linear functions with graphs containing the foollowing pairs of points.
(0,3) and (6,6)
Click here to see answer by stanbon(75887)

Question 559665: 3w
____ + 8 = w - 7 ____
4 3

Click here to see answer by stanbon(75887)

Question 559993: I need help solving this problem:

I've already factored out the y, but after that I'm not sure what I'm supposed to do, I used the quadratic formula but I get two answers: y(4)=0 and y(-1/7)=0

Click here to see answer by Edwin McCravy(20056)

Question 560267: Writing Equations
The slope is 1; the y intercept is 2
Click here to see answer by unlockmath(1688)

Question 560397: 3x+5=x+15
Click here to see answer by kkasko(46)

Question 560502: Please help!
I need to find the solution and graph for:
5x-6y=-25
3x+28=y
Please show me how to do this.
Thank you
Click here to see answer by stanbon(75887)

Question 560785: How do you solve -3x+y=7
5x+2y=3
Click here to see answer by jim_thompson5910(35256)

Question 560829: Find the equation of the line in slope-intercept form that passes through (-3,5), with slope -2/5. Help!
Click here to see answer by jim_thompson5910(35256)

Question 560930: Please help me solve this system using the method of substitution. I would like the steps to know how it's done. Thank you.
.5x+2.2y=9
6x+.4y=22
Click here to see answer by stanbon(75887)

Question 560949: How do you solve by substitution or elimination these linear equations?
{2x+y=5}
{1x+2y=4}
I get confused on these steps.
Click here to see answer by mananth(16946)

Question 561290: I need to solve by addition: 5x-4y=9 and -x+2y=3. I know I need to multiply the first two coefficients by 5, but they both come up as -5. Is there any solution or is there no solution because it is dependent?
Click here to see answer by josmiceli(19441)

Question 561305: How many solutions does the system have?
-2x+5y=7
-2x+5y=12 HELP!!
Click here to see answer by jim_thompson5910(35256)

Question 561683: hello, i have a word problem that i just can't seem to get can you help me. the word problem is:
the break-even piont at wich income equals expenses. Ridgemont High School is paying $13,200 for the writing and reasurch of their yearbook plus a printing fee of $25 per book. if they sell the books for $40 dollors each, how many will they ahve to sell to break even? Explain.
okay i made let statements to make the problem easier but i had difficulty making a let statement for y beacuse they only want ot know what one thing is and X= the number of yearbooks sold to make a break even. since i can't come up with a let statement for y would there be no solution. Can you please help me. Thank you

Click here to see answer by markpoe(1)

Question 561733: what is the formula for Fahrenheit scale is a linear function of temperature on the celsius scale.
Ten degrees celsius equal 50 degrees fahrenheit,and 25 degrees celsius equals 77 degrees fahrenheir

Click here to see answer by Edwin McCravy(20056)

Question 562073: solve each system using substitution.
y=8-x
7=2-y
Click here to see answer by mananth(16946)

Question 562098: tell whether the system has one solution infinitely many solutions or no solution.
17=11y+12x
12x+11y=14
Click here to see answer by TutorDelphia(193)

Question 562104: solve each system using substitution.

2=2y-x
23=5y-4x
Click here to see answer by mananth(16946)

Question 562075: solve each system using substitution.

4x=3y-2
18=3x+y
Click here to see answer by TutorDelphia(193)

Question 562121: solve each system using substitution
y-2x=3
3x-2y=5
Click here to see answer by TutorDelphia(193)

Question 562146: tell whether the system has one solution infinitely many solutions or no solution

5=1/2x+3y
10-x=6y
Click here to see answer by mananth(16946)

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