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

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Question 1020131: y=-1/2x-4
Click here to see answer by FrankM(1040)

Question 1020179: Two hotel rooms have room numbers that are consecutive integers.the sum of the numbers is 515.what are the two room numbers
Click here to see answer by ikleyn(52781)

Question 1020205: Check whether the line 3x-2y+9 passes through the point (1,6). Write down the equation of line through (3,7) and of slope 3/2?
Click here to see answer by robertb(5830)

Question 1020235: 2x-5y=32
2x+3y=0
solve equations graphically
Click here to see answer by Fombitz(32388)

Question 1020246: What is the equation of a line that passes through (7, 8) and has a slope of -3?

Click here to see answer by Fombitz(32388)

Question 1020245: 3x-3y=0
2x-y=1
solve equations graphically
Click here to see answer by Fombitz(32388)

Question 1020299: y-2<-5 or y -2> 5
Click here to see answer by stanbon(75887)

Question 1020377: write an equation for the line that contains the point (-1 2) and is perpendicular to the line 3x+5y=7
Click here to see answer by robertb(5830)

Question 1020378: write an equation for the line that contains the point (8,-2) and is perpendicular to the line 4x-2y=9
Click here to see answer by robertb(5830)

Question 1020378: write an equation for the line that contains the point (8,-2) and is perpendicular to the line 4x-2y=9
Click here to see answer by josgarithmetic(39617)

Question 1020381: Tell whether the lines for each pair of equations are Parallel, Perpendicular, or neither; y=-x+5, y=x+5

Click here to see answer by robertb(5830)

Question 1020383: Tell whether the lines for each pair of equations are Parallel, Perpendicular, or neither;y=x/3-4,y=1/3x+2

Click here to see answer by robertb(5830)

Question 1020385: Tell whether the lines for each pair of equations are Parallel, Perpendicular, or neither;2x+y=2,2x+y=5

Click here to see answer by robertb(5830)

Question 1020388: Tell whether the lines for each pair of equations are Parallel, Perpendicular, or neither;4x-3y=36,3x-4y=20

Click here to see answer by josgarithmetic(39617)

Question 1020382: Tell whether the lines for each pair of equations are Parallel, Perpendicular, or neither;y=4x=3/4, y=-1/4x+4

Click here to see answer by josgarithmetic(39617)

Question 1020507: 1. What is the point of intersection of 2x+y=5 and x-3y=7?
This is what I have so far:
5+7=12
3x/3=12/3=4
4-3y=7
=

Click here to see answer by Fombitz(32388)

Question 1020541: Find the coefficients that must be placed in the boxes so that the function's graph will be a line with the given intercepts.
??x + ??y = -48
The x-intercept is -8.
The y-intercept is 12.
Click here to see answer by Boreal(15235)

Question 1020613: y+x=3
Click here to see answer by ikleyn(52781)

Question 1020594: Answers with work shown please.
2. Solve the following systems of equations by elimination. Verify the solutions.
a. r + 2s + 1 = 0
r + 5s + 28 = 0
Answer:
b. 4m - 3n = 27
8m - 6n = 18
Answer:

c. 0.6x = 1.2 + 0.3y
2.2x - 1.8y - 1.6 = 0
Answer:
/2 3. Frank has $8 000 that he plans to split into two investments. He wrote the following two equations to represent the interest he will earn from each of the two investment options.
� 2000A + 6000B = 520
� 4000A + 4000B = 480
Determine the interest rates, A and B, as percentages.
Answer:

Click here to see answer by ikleyn(52781)

Question 1020591: ⦁ Consider the linear system of equations and 2x - 3y + 1 = 0.
a. Graph the system of equations
b) What is the solution to the system of equations?
c. Verify the solution.

Click here to see answer by ikleyn(52781)

Question 1020677: what should be subtracted from twice the rational number -3/11 to get -5/22?
Click here to see answer by fractalier(6550)

Question 1020690: (6,3), (5,y) slope= -1
Solve for x.
Click here to see answer by Fombitz(32388)

Question 1020806: Find the standard form of the equation of the line that passes through (-4, -2) and (-8, -1).
Click here to see answer by ewatrrr(24785)

Question 1020879: Please help me solve this equation: y+-1/3x+2
Click here to see answer by ikleyn(52781)

Question 1020862: Write the slope-intercept form of the equation of the line through the given points.
through: (-4,-2) and (5,2)
Click here to see answer by josgarithmetic(39617)

Question 1020859: Write the equation of the line in slope intercept form or in standard form.
Slope = 2/5, y-intercept = 3
Click here to see answer by josgarithmetic(39617)

Question 1020857: Write the slope-intercept form or the standard form of the equation of the line
through: (1,0), slope = 3
Click here to see answer by josgarithmetic(39617)

Question 1020864: Write an equation of the line that is perpendicular to the given line and passes through the given point y=2x-1 (2,4)
Click here to see answer by Cromlix(4381)

Question 1020973: xy=4
Click here to see answer by Alan3354(69443)

Question 1021051: sketch the graph of each line y=3/5x+5 thank you
Click here to see answer by josmiceli(19441)

Question 1021065: What is the slope for (2,7) and (5,6)?
Click here to see answer by MathLover1(20849)

Question 1021075: The selling price of a car is $21,000. If the markup is 20% of the dealer�s cost, what is the dealer�s cost of the car?
Click here to see answer by robertb(5830)

Question 1021074: The advertised price of a TV is $399. What is the total price of the TV after 5% sales tax has been added?
Click here to see answer by Cromlix(4381)

Question 1021153: x-intercept=5-8 and y-intercept =-7
Click here to see answer by Fombitz(32388)

Question 1020909: -185=-3r-4(-5r+8)
Click here to see answer by Fombitz(32388)

Question 1021313: You just purchased a large pool. A water hose can fill this pool in 4 hours. If you use a
pump instead of a water hose, it will only take you 1 hour to fill the pool. How long
will it take if you use the hose and the pump at the same time?
Click here to see answer by josgarithmetic(39617)

Question 1021346: "A parabola has been drawn on a graph but there is information missing. The equation has not been written on the curve. It has a minimum turning point, a y intercept of +6, and cuts the x-axis at +2 and +3. Determine the equation of the curve." I don't even know where to begin wit this!
Click here to see answer by josgarithmetic(39617)

Question 1021303: What is the x-value that corresponds with y=50
Click here to see answer by Fombitz(32388)

Question 1021490: I need to know the slope and y intercept of 2y-x=4 and how to get it. I do not grasp this concept and desperately need to know it.

Click here to see answer by Alan3354(69443)

Question 1021488: The point (3,5) is on a line with a slope of -2. Which other point is on the line?
Click here to see answer by Alan3354(69443)

Question 1021508: Find the slope and y intercept of the graph of y + 1/2x= 0
Click here to see answer by josgarithmetic(39617)

Question 1021599: Are these lines parallel
y=-7x-9
-3y=21x+7

Click here to see answer by engsaoudah(9)

Question 1021609: what is the difference between Linear equation in one variable and Linear equation in two variables??
Click here to see answer by Fombitz(32388)

Question 1021609: what is the difference between Linear equation in one variable and Linear equation in two variables??
Click here to see answer by stanbon(75887)

Question 1021649: Need to solve this by hand. Please help, thanks!
How do I find the equation of the line passing through points (1,19) and (-1,-3)
Click here to see answer by macston(5194)

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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14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 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