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

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Question 428234: Find the slope of a line parallel to the graph of this equation.
y=4x+2
Click here to see answer by John10(245)

Question 428268: write a question that can be solved using a system of linear equations
Click here to see answer by Gogonati(809)

Question 428263: lois and clark, two elderly reporters are covering separate stories and have to travel in opposite directions. lois leaves the daily planet building at 0800 am
and travels at 35 mph. clark leaves at 0815 and travels at 40 mph. at what time will they be 140 mi apart?
Click here to see answer by Theo(3461)

Question 428398: bob has 60 coins consisting of quarters and dimes. The coins combined value is $9.45. Find out how many are quarters and how many are dimes
Click here to see answer by mananth(12270)

Question 428412: equation for the line that passes through the point (-1, 2) and is parallel to the line with equation 2y+6x=10
Click here to see answer by mananth(12270)

Question 428416: what is the midpoint of the line segment whose endpoints are (5,-2) and (-3,7)
Click here to see answer by rfer(12657)

Question 428551: a^2-b^2/b^2-a^2
Click here to see answer by vleith(2825)

Question 428645: Find the y- and x- intercepts for the equation. Graph the equation.
f(x)=-3-7x.
Click here to see answer by ewatrrr(10682)

Question 428641: What is the answer for Perpendicular to 3x -5y=1?
Click here to see answer by htmentor(789)

Question 428697: Write the equation of the line which passes through (5, –2) and is parallel to x = 4. (1 point)

Click here to see answer by John10(245)

Question 428734: find an equation for the line that is parallel to the given point
Y=3x-4; (0,1)
Click here to see answer by John10(245)

Question 428805: Please help me to determine graphically the solution set for the following set of inequalities:
x +2y > or = to 3
5x - 4y < or = to 20
y < or = to 2
x > or = to 0
y > or = to 0
Click here to see answer by solver91311(16877)

Question 428921: This problem is killing me
Which of these inequalities is not satisfied by any of the real number x?
-5< x <= -11
-8 < x <= -7
0 < x <= 4
-2 < x <= 6
Click here to see answer by solver91311(16877)

Question 428938: 353 people attend a local play ata private club. members get tickets for $2.75, while non - members have to pay $6.50. If the total gate for the play came to $1762, how many members and non - members came to the play?
Click here to see answer by stanbon(57337)

Question 428887: Find the equation of the line that passes through the point (4,5) and is parallel to the line y=3x+6.

Click here to see answer by robertb(4012)

Question 429070: Find the coefficient of x3 in the expansion of (x − 2)5
Click here to see answer by Gogonati(809)

Question 429070: Find the coefficient of x3 in the expansion of (x − 2)5
Click here to see answer by poliphob3.14(115)

Question 429069: Using a trigonometric identity, integrate
sin2 2xdx
Click here to see answer by robertb(4012)

Question 429068: Integrate
R
sec2 3xdx
Click here to see answer by robertb(4012)

Question 429067: Find the vector from (−3, 4, 2) to (1, 1, 6)
Click here to see answer by robertb(4012)

Question 429089: show the steps for graphing y=-5+6x/8 Answer from 6x-8y=40,6x=8y+40
Click here to see answer by ewatrrr(10682)

Question 429212: Hi,
I want to solve 4x-7=y.
How do I solve this and graph it plotting ordered pairs solutions?
Paola
Click here to see answer by ewatrrr(10682)

Question 429281: A roof rises 2.4 feet vertically and 9.6 feet horizontally, what is the grade of the roof?
The grade of the roof is? %
Click here to see answer by rfer(12657)

Question 429497: find the value of k so that the graph of 2x+3y=10 is perpendicular to the graph of 3x+ky=8
Click here to see answer by robertb(4012)

Question 429486: I have this one type of problem I do not understand. I'm a junior in high school & i'm going over old material. The question states, "Determine the slope of the line from the equation that describes the line" y=6x and the second problem y=-3/7x I have a feeling if I figure out the first problem I can probably figure out the second one even though its slightly more complex because is a fraction. Thank You very much for your help!!
Click here to see answer by mananth(12270)

Question 429496: find the value of k so that the graph of 2x+3y=10 is perpendicular to the graph of 3x+ky=8
Click here to see answer by poliphob3.14(115)

Question 429547: Select the set of equations that represents the following situation: the sum of two numbers is 51, and their difference is six less than the smaller number. What are the two numbers?
a) 2y= 51; 51- x-6
b) x =y =51; x-y=6-x
c)2x=51; 51= x+6
d) x+y=51; y-x = x-6

I narrowed the answer to D, is this correct
Click here to see answer by mananth(12270)

Question 429570: Solve using the addition and multiplication principles. 6-3x>2-2x
Click here to see answer by ewatrrr(10682)

Question 429681: 2x-3y=21
y=3-x
x=4-5y
3x+15y=-1

5x-2y=14
y=2x-5
help me solve these for my test tomorrow
Click here to see answer by stanbon(57337)

Question 429836: What is the order of operation for this problem. I have tried and keep getting stuck. Here's the problem:
8x + 9y = 31 -5x + y = 26
Here's what i've done so far
8x+5x=31-9y+y=26
13x+31-8y+26 ??????
Thank you
Click here to see answer by sudhanshu_kmr(1152)

Question 429857: Do the graphs of y = x and y = x +2 intersect with each other? Why or why not?
Click here to see answer by akib_bd(2)

Question 429848:
Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
6x + y = 46
6x – y = 38

Click here to see answer by mananth(12270)

Question 429959: I have to show my work and I only know how to do these on a calculator any help would be greatly appreciated!!
-10x - 11y + 7z = 145
7x - 4y - 3z = 53
-5x - y = 146
Click here to see answer by ewatrrr(10682)

Question 430069: label the lines as parallel or coinciding and explain why
x + y = 5
y = 7 - x
Click here to see answer by stanbon(57337)

Question 430073: In 1960, the average American disposed of 2.7 pounds of garbage per day, whereas in 2003 this amount was 4.3 pounds per day.
a) Find a linear function "F" that calculates the amount of garbage disposed of by a person in 1960 after "x" days. Find "F (60)" and interpret the result.
b) Repeat part (a) for 2003 with a linear function "g".
Click here to see answer by stanbon(57337)

Question 430185: i have a presentation due and i have to a math problem in the presentation so i need to know how to do a linear equation for birth rates from 1990 to 2050

Click here to see answer by nerdybill(6958)

Question 430271: What is the slope and y-intercept of the line (-4,-10)? How did you figure this out?
Click here to see answer by rosey51235(25)

Question 430271: What is the slope and y-intercept of the line (-4,-10)? How did you figure this out?
Click here to see answer by Alan3354(30993)

Question 430313: How do you determine the value of r so the line passes through each pair of points has the given slope?
example.
I can't figure out how to do this:
(10,r),(3,4), m = -2/7
i just need to figure out how to do it so then i can do the rest by myself. Thanks
Click here to see answer by John10(245)

Question 430323: how do i find the linear equation of a staircase?
Click here to see answer by stanbon(57337)

Question 428573: What is the equation of the line, in standard form, that passes through (4, -3) and is parallel to the line whose equation is 4x + y - 2 = 0?
Click here to see answer by mananth(12270)

Question 428471: I need to use substitution method
15x-10y=1
5y=-2+15x
Click here to see answer by mananth(12270)

Question 428476: Flying from Tokyo to London is approximately 6175 miles. On the way to London from Tokyo(against the wind) the flight took 13 hours. the return flight (with the wind) took 9.88 hours. Find the speed of the plane in still air and the speed of the wind current.
Click here to see answer by mananth(12270)

Question 430682: Consider the line . y=8x-8 Find the equation of the line that is perpendicular to this line and passes through the point .(2,4) Find the equation of the line that is parallel to this line and passes through the point .(2,4)
Click here to see answer by oberobic(2304)

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7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 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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