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

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Tutors Answer Your Questions about Linear-equations (FREE)

Question 929606: identfy the slope and y intercept of the line with the given equation
-x + 6y = 21
Click here to see answer by ewatrrr(24785) About Me 
Question 929632: find the equation for a line passing through (-3,5) and (2,6)
Click here to see answer by rfer(16322) About Me 
Question 929635: find the equation of the line that passes through the given points. Write the equation in slope-intercept form. (-2,7) and (-5,13)
Click here to see answer by LinnW(1048) About Me 
Question 929708: Write an equation of the line given the following information. Put your answer in slope-intercept form.
Through (-1, -4) and perpendicular to y = -6x + 11
Click here to see answer by TimothyLamb(4379) About Me 
Question 929718: Write an equation of the line given the following the information. Put your answer in slope-intercept form.
Through (7, -9) and perpendicular to 2x + 3y = 9
Click here to see answer by TimothyLamb(4379) About Me 
Question 929718: Write an equation of the line given the following the information. Put your answer in slope-intercept form.
Through (7, -9) and perpendicular to 2x + 3y = 9
Click here to see answer by stanbon(75887) About Me 
Question 929724: slope of a line is 4. What is the slope of any line parallel to it? slope of any line perpendicular to it?
Click here to see answer by stanbon(75887) About Me 
Question 929727: Hi, In class I was taught how to change an equation to function form here is an example y-x=1 or 8x+2y=-4, could you teach me how to change an equation to a function form?
Thanks
Click here to see answer by stanbon(75887) About Me 
Question 929847: the line is perpendicular to y=4x-3 and passes through the point (-4,7)
Click here to see answer by Fombitz(32388) About Me 
Question 929879: please help me solve this equation. y-1=2/7x.
(?, 5-7) find x
the part that keeps messing me up is getting rid of the 2/7 from the x.
I am doing 5/7-1= 2/7x(7/2)
(7/2)5/7-1=x
5/2-1=x
getting x=3/2 but it doesn't make sense when I plug it back into the problem. what am I doing wrong?
Click here to see answer by Alan3354(69443) About Me 
Question 930168: Write the equation of a line perpendicular to the given line but passing through the given point.
given line: y = -4x – 5
given point: (0, 1)
Click here to see answer by TimothyLamb(4379) About Me 
Question 930166: Write the equation of a line parallel to the given line but passing through the given point.
y = 1/4x – 4
(8, -1)
Click here to see answer by TimothyLamb(4379) About Me 
Question 930181: Jamie has 6 quarters and some dimes in his pocket. the total value of the coins is 4.50. How many dimes does he have in his pocket?
Click here to see answer by TimothyLamb(4379) About Me 
Question 930122: m = -9, a point on the line is (6,7). find the equation of the line
Click here to see answer by TimothyLamb(4379) About Me 
Question 930329: What is the slope-intercept form of the function that contains the point (8, 12) and has a slope of -2

y = x +

Click here to see answer by ewatrrr(24785) About Me 
Question 930332: Write the equation of the direct variation that includes the point (9,3)- Show work!
Click here to see answer by ewatrrr(24785) About Me 
Question 930340: -2x + 2y =-4
Click here to see answer by sunny1992(35) About Me 
Question 930513: Two angles of a triangle have the same measure and the third one is 3 degrees greater than the measure of each of the other two. Find the measure of the LARGEST angle in the triangle.
Answer: The LARGEST angle has a measure of _________ degrees.
Click here to see answer by algebrahouse.com(1659) About Me 
Question 930542: The speed of a stream is 4 mph. A boat travels 3 miles upstream (against the current) in the same amount of time it takes to travel 11 miles downstream (with the current). Find the speed of the boat in still water (no current).
ANSWER: The speed of the boat in still water is ______ mph.
Click here to see answer by mananth(16946) About Me 
Question 930572: What is the best cell phone plan to choose among the following plans? Show linear equation and graph.
Plan A: 160 mins + 200 texts + 750 MB = $34
Plan B: 250 mins + 250 texts + 2.5 GB = $52
Plan C: 500 mins + 450 texts + 10 GB = $72

Thanks :)
Click here to see answer by Alan3354(69443) About Me 
Question 930691: Dr. Chait is considering joining the Garden Club. If he pays a $25 membership fee, he can buy rosebushes from the club at a reduced price of $10 each. if he does not join the club, he can buy rosebushes from a local nursery for $15 each. The graph below compares the cost of buying rosebushes from the Garden Club and from the local nursery.
Y__________________
110___________________
105________________@___
100_____________________
95 ________________$___
90 ______________@_____
85 ______________$_____ Key
80 ___________________ Garden Club @
75 __________@$_______ Nursery $
70 ___________________
65 _________$__________
60 _________@__________
55 ______$_____________
50 ___________________
45 ___$__@____________
40 ___________________
35 _$__________________
30 ____@_______________
25 ___________________
20 ___________________
15 _@__________________
10 ___________________
5 ___________________
____________________X
0 1 2 3 4 5 6 7
How may rosebushes will Dr. Chait have to buy from the Garden Club before he would begin to save money? 5, 7 25 or 75
Click here to see answer by amariya(8) About Me 
Question 931472: find an equation of the line passing through the point O(7,-3) and perpendicular for the line 2x-5y=8.
Click here to see answer by MathLover1(20849) About Me 
Question 931491: Please assist,
Write the equation of a line perpendicular to the given line but passing through the given point.
y = -4x - 5; point (0, -1)
Click here to see answer by KMST(5328) About Me 
Question 931822: If I get a decimal answer for my slope, how can I change it into a full number?
Click here to see answer by Alan3354(69443) About Me 
Question 931914: If you have the points (20,1.2) and (53,2.6) how do you find the slope and how to make the equation of the line? I really need help! :(
Click here to see answer by TimothyLamb(4379) About Me 
Question 932125: Find an equation of the line that has the given slope and passes through the given point.
m = -3,(3/2,2)3 over 2 shown as a fraction simplify your answer. Type your answer in slope-intercept form. Use integers or fractions for any numbers in the equation
Click here to see answer by TimothyLamb(4379) About Me 
Question 932176: If you have a piece of pipe that's 180 inches. It is cut into 2 pieces. The largest piece is 5 times longer than the smaller piece what are the lengths of the 2 pieces of pipe?
Click here to see answer by Fombitz(32388) About Me 
Question 932176: If you have a piece of pipe that's 180 inches. It is cut into 2 pieces. The largest piece is 5 times longer than the smaller piece what are the lengths of the 2 pieces of pipe?
Click here to see answer by Alan3354(69443) About Me 
Question 931370: y-4=1/2(x+3) i need help with this slope intercept form question?
Click here to see answer by Fombitz(32388) About Me 
Question 932209: Find the constant of variation:
X = 4 and y = 32
Click here to see answer by Fombitz(32388) About Me 
Question 932216: Find the constant of variation:
X = 18 and y= 6
Click here to see answer by jim_thompson5910(35256) About Me 
Question 932210: Graph each relation and state the domain and range of each relation. Then determine whether the relation is a function. Please


y = 2x – 3
Click here to see answer by jim_thompson5910(35256) About Me 
Question 932233: find the constant of variation:
X = 18 and y= 6
Click here to see answer by MathLover1(20849) About Me 
Question 932272: X varies directly it y. If x is 24 when y is 30, find x when y is 90.
Click here to see answer by Alan3354(69443) About Me 
Question 932276: X varies directly with y. If x is 24 when y is 30, find x when y is 90.
Click here to see answer by Alan3354(69443) About Me 
Question 932283: Compare the graph with the graph of f (x) = x
G (x) = -2x
Click here to see answer by Alan3354(69443) About Me 
Question 932287: What is the value of the function when x = 5
F(x) = -3x
Click here to see answer by jim_thompson5910(35256) About Me 
Question 932411: Hello, please i need help solving this problem step by step:
-4x-8y-z=-64
x+2y+7z=43
-8x+y+z=-65
Thank you
Click here to see answer by MathLover1(20849) About Me 
Question 932422: peter needs to measure the slope of a cone shaped pile of sand.the vertical distance from the piles peak to its base is 2.5 meters. and the horizontal distance from its peak to its edge is 5 meters. what is the slope of the pile of sand
Click here to see answer by josgarithmetic(39617) About Me 
Question 932444: A chemist has a 60 mL beaker of a 40% solution solution. Write an equation for the concentration of the solution after adding x mL of pure water.
Concentration = ________?
Click here to see answer by ptaylor(2198) About Me 
Question 932499: Which choice could be the equation of a line perpendicular to the the line represented by the equation y=(2/5)x+2
Click here to see answer by Fombitz(32388) About Me 
Question 932586: Hello,
I think I'm mixing something up in the question below.
Write the general form of the equation of the circle with radius r and center (h,k).
r= 2 sqrt( 3 ) (h, k) = (4, -4)
This is what I came up with
(x-4)^2 + (y + 4)^2 = 6
which gives
x^2-8x+16 + y^2+8y+16
then
x^2+y^2-8x+8y+32=6
then I get confused after I subtract 32 from both sides
x^2+y^2-8x+8y=-26


Click here to see answer by ewatrrr(24785) About Me 
Question 932586: Hello,
I think I'm mixing something up in the question below.
Write the general form of the equation of the circle with radius r and center (h,k).
r= 2 sqrt( 3 ) (h, k) = (4, -4)
This is what I came up with
(x-4)^2 + (y + 4)^2 = 6
which gives
x^2-8x+16 + y^2+8y+16
then
x^2+y^2-8x+8y+32=6
then I get confused after I subtract 32 from both sides
x^2+y^2-8x+8y=-26


Click here to see answer by stanbon(75887) About Me 
Question 932834: (3,-6) x+y=-4
Write equation of the line that passes thru the given point and is perpendicular to the graph
Click here to see answer by stanbon(75887) About Me 
Question 932873: a chemist mixed 30% acid and 50% acid solution and produced 5 gallons of 40% solution. How many liters of each were combined to produced the resulting solution?
Click here to see answer by ewatrrr(24785) About Me 
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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, 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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, 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