Questions on Algebra: Linear Equations, Graphs, Slope answered by real tutors!

Tutors Answer Your Questions about Linear-equations (FREE)

Question 192756: Plot the graphs of the equations 2x - 3y = 5 and 4x - 6y = 21 and interpret the results. Thank You!
Click here to see answer by Mathtut(3670)

Question 192755: Solve by substitution or elimination method: Thank You
3x � 2y = 26
-7x + 3y = -49
Click here to see answer by Mathtut(3670)

Question 192764: Plot the graphs of the equations 4x - 6y = 12 and x - 5y = 10 and interpret the result. Please show how to solve on a graph. Thanks
Click here to see answer by Mathtut(3670)

Question 192765: Find the slope intercept form of the line passing through the point (-4,-9) and parallel to the line -2x-6y=7. I just dont need the answer i need how to do it as well.
Click here to see answer by Mathtut(3670)

Question 192766: Plot the graphs of the equations 8x - 4y = 12 and -4x + 2y = -6 and interpret the result. Please show a graph. Thanks!
Click here to see answer by jojo14344(1513)

Question 192761: 1.Solve by substitution or elimination method: I just need to know the steps involved to solve the problem, please show work, I don't need the graphs. Thanks!
4x � 5y = 14
-12x + 15y = -42
Click here to see answer by Mathtut(3670)

Question 192810: Solve by substitution or elimination method: I just need to know the steps involved to solve the problem, please show work, I don't need the graphs. Thanks!
-2x+6y=19
10x-30y=-15
Click here to see answer by Alan3354(69443)

Question 192826: y=x-1
Click here to see answer by Mathtut(3670)

Question 192847: What is the midpoint of (-9,-8),(1,2)?
Click here to see answer by stanbon(75887)

Question 192880: A high school class wants to raise money by recycling newspapers. The class decided to rent a truck at a cost of $150 for the week. The market price for recycled newspapers is $15 per ton. Write an equation representing the amount of money the class will make based on the number of tons of newspapers collected.. Explain what you did to get your answer.
Click here to see answer by nerdybill(7384)

Question 192882: Complete the ordered pair (4) so that it is a solution of x + 2y = 9
Click here to see answer by stanbon(75887)

Question 192878: A man walks at a pace of 3 miles per hour. After 2 hours he stops for a rest let t be time AFTER the rest when he continues on his walk. Let d be the TOAL distance traveled since he stared. Write an equation linking d and t. Explain what you did to get your answer.
Click here to see answer by stanbon(75887)

Question 192941: Solve by substitution or elimination method: Thanks
3x � 2y = 26
-7x + 3y = -49
Click here to see answer by stanbon(75887)

Question 192946: Why is x=4 a vertical line?
Click here to see answer by Alan3354(69443)

Question 192943: 1.Solve by substitution or elimination method: Thanks!
4x � 5y = 14
-12x + 15y = -42
Click here to see answer by Alan3354(69443)

Question 192981: Fundraising- The St. Marks Community Barbecue served 250 dinners. A child's plate cost 3.50 and an adult's plate cost 7.00. A total of 1347.50 was collected. How many of each type of plate was served?
Click here to see answer by checkley77(12844)

Question 193017: Begging for Help on these Systems of Linear Equations!!!!?
I have to figure out the following:
1) Determine how many solutions exist
2) Use either elimination or substitution to find the solutions (if any)
3. Graph the two lines, labeling the x-intercepts, y-intercepts, and points of intersections.
Question:
x/3 - y/5 = 4 and 3x/4 + 2y/3 = 6

These are not in the textbook that I am using for my online Math class. The teacher pick these out of their head and we just have to solve them.
Thank you!
Click here to see answer by Alan3354(69443)

Question 193093: I keep getting (4/11, 13/11) as the answer and have been told this is wrong. What is the answer?
Click here to see answer by Alan3354(69443)

Question 193088: find the equation of the line containing the points(2,1)and (3,-4)
Click here to see answer by Alan3354(69443)

Question 193089: Find the domain of each function
f(x)=____8____
2x+3
Click here to see answer by jim_thompson5910(35256)

Question 193098: to solve systems of equations by graphing.
y = 2/3x - 1
y = x + 4

Click here to see answer by Alan3354(69443)

Question 193012: What is the set solution for X+Y>6?
Click here to see answer by Mathtut(3670)

Question 193191: How do i find the slope of the line 4x=y?
Click here to see answer by Alan3354(69443)

Question 193200: need to graph and find y intercept
y=1/5x
Click here to see answer by jim_thompson5910(35256)

Question 193215: Superbowl contender: The probability that San Francisco plays in the next SuperBowl is nine times teh probability that they do not play in the Super Bowl. The probability that San Francisco plays in the next Super Bowl plus the probability that they do not play is 1. What is the probablility that San Francisco plays in the next Super Bowl?
I use the P=9 and the P=9w I got the answer fractioned out 1 out 9 they have a chance however how can this be place as a fraction problem to get a percent if I take 9divided by 9 i get 1.
Click here to see answer by stanbon(75887)

Question 193326: You must state your answer in words. You must set up a system of two equations in two variables.
You must state what the variables represent.
You must show all the steps in solving the system of equations.
Stan has a collection of nickels and dimes that is worth $6.05. If the number of dimes was doubled and the number of nickels was decreased by 10, the value of the coins would be $9.85. How many dimes does he have? Thanks!
Click here to see answer by solver91311(24713)

Question 193335: Kelly seels 80 shares of stock she owns for a total of $491. If the stock was in two different companies, one selling at $5.50 a share and the other at $6.25 a share, how much of each did she sell?
At $5.50
At $6.25
Click here to see answer by RAY100(1637)

Question 193355: You must state your answer in words. You must set up a system of two equations in two variables.
You must state what the variables represent.
You must show all the steps in solving the system of equations.
An express train and a local train both leave Gray�s Lake at 12:00 noon and head for Chicago 60 miles away. The express travels twice as fast as the local and arrives 2 hours ahead of it. Find the speed of each train.
Thank You!
Click here to see answer by stanbon(75887)

Question 193372: The origin can sometimes be used as the test point, how is this supported?
Click here to see answer by solver91311(24713)

Question 193391: I am confused about how to solve this the equation is
y= -5x-1
Click here to see answer by yuendatlo(23)

Question 193400:
find the rate of change.explain what the rate of change means for each situation.
Click here to see answer by kaykbeauty(1)

Question 193431: You must state your answer in words. You must set up a system of two equations in two variables.
You must state what the variables represent.
You must show all the steps in solving the system of equations.
Heather made an extra $12,000 last year from a part-time job. She invested part of the money at 7% and the rest at 9%. She made a total of $970 in interest. How much was invested at 7%? Thank You!
Click here to see answer by stanbon(75887)

Question 193458: FIND THE EQUATION FOR THE LINE AND PUT THE FINAL ANSWER IN SLOPE INTERCEPT FROM USING CALCULATION, NOT GRAPHICAL METHODS
ONE POINT IS (4,6) ADN THE SLOPE IS 1/2
IF WE ARE NOT USING GRAPHICAL METHODS WHY IS THIS QUESTION A SLOPE QUESTION ARE WE SUPPOSE TO DIVIDE BETWEEN THE TWO I DONT UNDERSTAND PLEASE ASSIST THANK YOU
Click here to see answer by solver91311(24713)

Question 193457: THIS IS A TWO PART ? AND FOR SOME REASON CAN'T SEEM TO GET THE FIGURES TO MATCH AND FRUSTRATED CAUSE THE EXAMPLE IS NOT WORKING PLEASE HELP ME!!! MAYBE IFYOU SHOW ME i CAN MOVE FORWARD WITH OTHER QUESTIONS THANKS
A.Y-7=4
SLOPE
INTERCEPT
B.20-2Y=10X
SLOPE
INTERCEPT
Click here to see answer by jojo14344(1513)

Question 193459: plot the graph of the equation 6x-4y = 12, and -4y + 2y = -6
Click here to see answer by jojo14344(1513)

Question 193538: Beryl, Ena and Dave are on a coach trip and they stop at a cafe to get a cake or two. Beryl eats 3 cakes and Dave eats 2 more cakes than Ena.
Write an expression for the total number of cakes the three friends ate.
Click here to see answer by RAY100(1637)

Question 193579: (-1,0),(1,2) how to do this problem?
Click here to see answer by Mathtut(3670)

Question 193601: find the equations of the foliowing lines in slope=intercept form the problem reads as this ; through (4,1) (1,3)
Click here to see answer by Alan3354(69443)

Question 193638: How do you find the slop of a linear function table graph that the numbers under f(x) jump form 4 to 6 to 7 to 8?
Click here to see answer by Alan3354(69443)

Question 193672: The linear equation: y=0.15x+0.79
What is the slope (or rate of change) of this equation?
Click here to see answer by nerdybill(7384)

Question 193704: how to calculate the formular as below :
1). 2X+3Y=21
2). X/2+Y/3=19/6
Pls help me to find out the best way to solve the problem, TQ
Click here to see answer by RAY100(1637)

Question 193800: (-4x-2)+7=-3(x+3)
Click here to see answer by stanbon(75887)

Question 193824: How would you solve:
-3x + y = 4
Can you please show all the steps involved?
Thank you!
Click here to see answer by stanbon(75887)

Question 193824: How would you solve:
-3x + y = 4
Can you please show all the steps involved?
Thank you!
Click here to see answer by solver91311(24713)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 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23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 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30331..30375, 30376..30420, 30421..30465, 30466..30510, 30511..30555, 30556..30600, 30601..30645, 30646..30690, 30691..30735, 30736..30780, 30781..30825, 30826..30870, 30871..30915, 30916..30960, 30961..31005, 31006..31050, 31051..31095, 31096..31140, 31141..31185, 31186..31230, 31231..31275, 31276..31320, 31321..31365, 31366..31410, 31411..31455, 31456..31500, 31501..31545, 31546..31590, 31591..31635, 31636..31680, 31681..31725, 31726..31770, 31771..31815, 31816..31860, 31861..31905, 31906..31950, 31951..31995, 31996..32040, 32041..32085, 32086..32130, 32131..32175, 32176..32220, 32221..32265, 32266..32310, 32311..32355, 32356..32400, 32401..32445, 32446..32490, 32491..32535, 32536..32580, 32581..32625, 32626..32670, 32671..32715, 32716..32760, 32761..32805, 32806..32850, 32851..32895, 32896..32940, 32941..32985, 32986..33030, 33031..33075, 33076..33120, 33121..33165, 33166..33210, 33211..33255, 33256..33300, 33301..33345, 33346..33390, 33391..33435, 33436..33480, 33481..33525, 33526..33570, 33571..33615, 33616..33660, 33661..33705, 33706..33750, 33751..33795, 33796..33840, 33841..33885, 33886..33930, 33931..33975, 33976..34020, 34021..34065, 34066..34110, 34111..34155, 34156..34200, 34201..34245, 34246..34290, 34291..34335, 34336..34380, 34381..34425, 34426..34470, 34471..34515, 34516..34560, 34561..34605, 34606..34650, 34651..34695, 34696..34740, 34741..34785, 34786..34830, 34831..34875, 34876..34920, 34921..34965, 34966..35010, 35011..35055, 35056..35100, 35101..35145, 35146..35190, 35191..35235, 35236..35280, 35281..35325, 35326..35370, 35371..35415, 35416..35460, 35461..35505, 35506..35550, 35551..35595, 35596..35640, 35641..35685, 35686..35730, 35731..35775, 35776..35820, 35821..35865, 35866..35910, 35911..35955, 35956..36000, 36001..36045