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

Algebra ->  Algebra  -> Coordinate Systems and Linear Equations -> Questions on Algebra: Systems of Linear Equations answered by real tutors!      Log On

 Ad: You enter your algebra equation or inequality - Algebrator solves it step-by-step while providing clear explanations. Free on-line demo . Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help! Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!

 Linear Solvers Practice Answers archive Word Problems Lessons In depth

 Question 19496: how do u do writing linear equations given two points Click here to see answer by xcentaur(357)

 Question 20012: how do u do this 2x+3y=(-4) x+y=(-2) and this x+2y=0 y=3 Click here to see answer by Paul(988)

 Question 20033: i missed a day of algebra today and i missed the lesson on linear equations could you please explain the lesson in english?! thank you, absentee Click here to see answer by elima(1433)

 Question 20057: Hi i am studying for an algebra placement exam on Monday. I used the linear system solver for 3x+4y = 27 -3x+4y = -27 I get the substitution as far as x a function of y from the first equation x = (27 - 4y)/3 But why does the -4y become +4y when you substitute it into the second equation? -3(27+4y)/3+4y=-27 Also what are the steps in simplifying that takes you from -3(27+4y)/3+4y=-27 to: 24y=0 or y=0 Trying to comprehend! Click here to see answer by wuwei96815(245)

 Question 20303: I have tried this problem four times---My book says the answer should be -13/2 I keep getting different answers----What is the step by step procedure? PROBLEM: 2/5x-5=12/5x+8 Click here to see answer by suresh(20)

 Question 20398: Does the point (-5, 2) satisfy the following compound inequality and how? Can someone help me with? 3x – 5y < 15 and 3x + 2y < 12 Thank you in advance. Click here to see answer by Earlsdon(6294)

 Question 20480: Here is another one, solve each system by the addition method. 2x=2-y 3x+y=-1 Help,I have no clue. Click here to see answer by suresh(20)

 Question 20400: Write down the equation for the line that passes through the point (3, -2) and is perpendicular to the line y = 2x + 4. How do I do this? Click here to see answer by suresh(20)

 Question 20532: Hello, I have a list of equations below theres suppose to be two sets of parallel lines which one are ? also there are suppose to be 3 pairs of perpindicular lines as well i'm suppose to identify the perpindicular equations by letters and equations and for the parallel i'm suppose to criss cross by connecting each parallel line: heres the list:: correct me if i'm wrong x = 3 y = 2x-1 y/2 = x+3 y = -7 2y = -x x = -2 I know -2 and -7 are horizontial x=3 i think is perpindicular and 2x-1 is parallel so how can answer this problem logically to supply the answers that are needed thanks for looking and trying to help! Click here to see answer by mmm4444bot(95)

 Question 20720: Trying to solve this equation. Have four choices on worksheet but cant get the right answer. the problem is (7x-7)squared=36. The choices are 13/7,0 29/7 -13/7,-1/7 13/7,1/7 thanks the next problem is 2n squared = -8n-1 thank you again Click here to see answer by kapilsinghi(68)

 Question 20696: How do i graph 3x + 2y >/= 6? by >/= that i mean larger or equal to. The help would be enormously appreciated! Click here to see answer by kapilsinghi(68)

 Question 20849: How do you solve: 3x + y = 8 y= x + 4 Click here to see answer by kapilsinghi(68)

 Question 20949: Renting A Moving Van A rentle company charges a flat fee of \$30 and an addional \$.25per mile to rent a moving van. write an equation to the model the total charge y(in dollars) in terms of x, the number of miles driven. Miles(x) 25 50 75 100 Cost(Y) ? ? ? ? Click here to see answer by CertifiedGenius(6)

 Question 21341: my homework asks me to graph this equation x=3 i have no idea how im going to graph this without a y-coordinance. Click here to see answer by kalants(7)

 Question 21359: Write the equation of the circle through the points (-1,0), (2,1), (0,3). Click here to see answer by venugopalramana(3286)

 Question 21325: Determine whether the line through P1 (1,-2_and P2 (4, -3) IS PARALLEL TO THE LINE THROUGH q1 (4,3) AND q2 (7,4) GRAPH IT Click here to see answer by Photonjohn(42)

 Question 21396: I am crashing and burning in my college algebra class... Write the equation of a line that passes (2,-5) and (3,-10). Write the answer in slope-intercept form. I have determined that the slope is -15 and I know the slope-intercept formula is y = mx + b.... what do I do next??? Click here to see answer by queenofit(120)

 Question 21443: 1. a-what is the standard form of an equation for a line? b-given the equations 5x-2y=24, identify A and B Click here to see answer by AnlytcPhil(1278)

 Question 21521: parallel lines write an equation of the line that is parallel to the given line and passes through the given point. y=2x + 2, (3,2) y= -2x + 3 (4,4) y= 2/3x - 2, (2,1) y= -4x - 2, (5,3) y= -9 - 8 (7,-2) Click here to see answer by venugopalramana(3286)

 Question 21705: When it says solve using the substitution method, how do you solve the equation when there are no numbers to substitute in? Example: x = y + 6 y = -2 - x How do i solve using the substitution method? Click here to see answer by longjonsilver(2297)

 Question 21742: You need to buy 8 packages of meat. A package of hotdogs costs \$1.89 and package of hamburgers costs \$5.19. You spend a total of \$31.62. a) Let x represent the number of packages of hotdogs bought and let y represent the number of packages of hamburgers bought. Write a system of equations you could solve to find the number of packages of each type of meat bought. b) solve the system Click here to see answer by Paul(988)

 Question 21550: I can't remeber how to solve for x in a case such as this: (I've looked everywhere) 1/sqrt(30-x)= 4 Thanks. Click here to see answer by pwac(253)

 Question 21988: 1. 18-3y=5 2. -14+9a=38 3. 14r+8=32 4. 37-58b=204 Click here to see answer by Earlsdon(6294)
 Question 21988: 1. 18-3y=5 2. -14+9a=38 3. 14r+8=32 4. 37-58b=204 Click here to see answer by Alwayscheerful(414)

 Question 22238: 5e+4f=9 4e+5f=9 how do u solve this in linear equation form,in substitution, and graphing Click here to see answer by MORUPHOSUOLALE(24)

 Question 22239: the sum of two numbers is 14. Six times the first number minus three times the second number is 3. Find the numbers. Click here to see answer by Paul(988)

 Question 22339: "You plant a 14 in hemlock tree in your backyard that grows at a rate of 4 in a year and a 8 in spruce that grows 6 in a year. In how many years will the plant be the same height? How tall will each tree be?". Please help! P.S. Solve it as a linear equation. Click here to see answer by Paul(988)

 Question 22432: Find the y-intercept of a line that passes through (-6,-2) and has a slope of 5/9 Click here to see answer by Paul(988)

 Question 22480: which of the following equations is a linear function? a. y=/x/ b. y=1/x c. y=x exponent 2-3 d. y=-x+5 Click here to see answer by stanbon(57967)