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

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 Linear Solvers Practice Answers archive Word Problems Lessons In depth

 Question 544768: Solve the system of equations by graphing x+y=8 x-y=6 where do I start? Click here to see answer by lwsshak3(6505)

 Question 545085: Use substitution to solve the system y=2x-11 3x+2y=13 Click here to see answer by saifoo.khan(162)

 Question 545088: Use substitution to solve the system 8x-9y=-1 -6x+5y=-1 Click here to see answer by saifoo.khan(162)

 Question 545158: Solve by substitution method. -10x+8y=-6 y=5/4x I need help refreshing for final. Click here to see answer by jim_thompson5910(28595)

 Question 545358: x-3y=2 3x-4y=-4 Cant solve this using substitution method. any help would be appreciated thanks Click here to see answer by jim_thompson5910(28595)

 Question 545670: which graph best represents the equation of a line with a slope of -4 and a y-intercept of 3? Click here to see answer by saifoo.khan(162)

 Question 545681: Which equation best decribes a line parallel to the graph of y=3/2x-3? Click here to see answer by Alan3354(30993)

 Question 545868: Find the equation of the line which is perpendicular to 3x-7y=-4 and passes through the point (-6,1) Click here to see answer by mananth(12270)

 Question 545951: I have been trying to figure out two problems dealing with a system of three linear equations and I keep getting confused with the steps. I used the elimination and addition method but I'm stuck. ``` Problem 1 is: Problem 2 is: 2x+y-z=10 3x+4y+z=14 6x+5y-2z=23 2y+7z=25 3x-y+z=5 -2y+3z=5 ``` Click here to see answer by Edwin McCravy(8909)

 Question 546400: solve the system of equations by using the substitution method 3x-4y=29 y=x-8 Click here to see answer by mananth(12270)

 Question 546415: Trail Snax Corp. mixes raisins that cost \$5.00 per kg with peanuts that cost \$3.80 a kg. How many kilograms of raisins should be mixed with 10 kg of peanuts to obtain a mixture worth \$4.00 per kilogram? Click here to see answer by mananth(12270)

 Question 547201: The value of -7 + 24 ÷ (-3)(2) is Click here to see answer by rfer(12660)

 Question 547329: how do i simplify? 2mn x 5m2n = (That 2 after m is a squared) Click here to see answer by stanbon(57347)

 Question 547596: A plane is cruising at an altitude of 24,000 ft. The plane begins to descend at a rate of 20 ft per sec. What equation gives the altitude h (in feet) of the plane as a function of the time t (in seconds) since it began descending? What is the altitude of the plane after 5 minutes? Click here to see answer by mananth(12270)

 Question 547792: what is the y-intercept of the line given by the equation below? enter your answer as an ordered pair y = -10x + 14 Click here to see answer by JBarnum(2044)

 Question 547848: x-7y=1 -3x-6y=-3 <-- Solve using substitution or elimination method? Click here to see answer by solver91311(16885)

 Question 547847: x-7y=1 -3x-6y=-3 <-- Solve using substitution or elimination method? Click here to see answer by solver91311(16885)

 Question 548082: One saw and 4 hammers cost \$72. Two saws and 6 hammmers cost \$114. How much does each item cost? Click here to see answer by mananth(12270)

 Question 548202: What is the slope of a line perpendicular to f(x) = 2x - 4? Click here to see answer by JBarnum(2044)

 Question 548386: Solve the system of equations using substitution. x2 + y2 = 169 x + y = 17 Click here to see answer by mananth(12270)

 Question 548446: Kenisha sells athletic shoes part time at a department store. She can earn either \$500 per month plus a 4% commission on her total sales, or \$400 per month plus a 5% commission on total sales. What is the total price of the athletic shoes Kenisha needs to sell to earn the same income from each pay scale. I only have a clear idea on the system of equations. 500+0.04c 400+0.05c Click here to see answer by rfer(12660)

 Question 548562: what is the solution? 6x - 7y=-56 4x + 52=y Click here to see answer by mananth(12270)

 Question 548574: Solve the system of equations. x + 3y + 5z = -4 3y + 3z = -6 z = 2 Click here to see answer by mananth(12270)

 Question 548571: Graph the system of inequalities. -x + 2y less than and equal to -6 3x + 2y > -1 Click here to see answer by mananth(12270)