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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 261470: what is the y-intercept?
Click here to see answer by richwmiller(9135)

Question 261408: What is the y=mx+b for 3x+3-2 <= 8
Click here to see answer by richwmiller(9135)

Question 261535: A company finds that it can produce 10 solar heaters for $7500, while the production of 20 heaters costs $13,900. If cost is a linear function of the number of heaters produced, express the cost function where x is the number of heaters produced.
Click here to see answer by drk(1908)

Question 261553: how do you find the linear equation and then graph it?
Click here to see answer by solver91311(16885)

Question 261596: y<2x+1
y=-x+3
The question asks me to solve each system of inequality by graphing?
Click here to see answer by richwmiller(9135)

Question 261619: Hello! I was hoping you could help me with a question. "One train leaves city A heading for city B which is 390 miles away. At the same time a second train leaves city B heading for city A, Going 15 mph faster then the first train. If they meet in 3 hours and 20 minutes how fast were the trains traveling?
I keep trying to put it in the formula 3.2(x)+ 3.2(x-15)=390 from there I get (simplified) 6.4x= 438
Please tell me where i'm going wrong
Thank you so much.
Vincent
Click here to see answer by Alan3354(30993)

Question 261594: 13+4w=-5(-w-6)+2(w+1)
Click here to see answer by butterfliiizzz(18)

Question 261729: Find an equation of the line that has the same y-intercept as the line x - 3y = 6 and contains the point (5, -1).
Click here to see answer by richwmiller(9135)

Question 261730: -2+4y=1
3x-6y=9
Click here to see answer by roseo(33)

Question 261712: is this a linear equation how would you solve this problem y-4x=5 step by step
Click here to see answer by richwmiller(9135)

Question 261712: is this a linear equation how would you solve this problem y-4x=5 step by step
Click here to see answer by PRMath(123)

Question 261711: how would you solve xy=3
Click here to see answer by checkley77(12569)

Question 261649: give the slope and y-intercept of each line whose equation is given. Then graph the linear function.

y=2x+1

Click here to see answer by checkley77(12569)

Question 261842: I have to solve a depreciation problem I am not sure how to do this I have found the slope it is -6000 the coordinates of two points on the graph I have picked are (1.0,108000)and (2.0, 114000)the cost of the printing press in the year 2006 120,000. the graph shows the depreciation in 6month intervales
Click here to see answer by stanbon(57347)

Question 261843: y-x=5
y+x=11
I nede the points to put into a graph
Click here to see answer by Alan3354(30993)

Question 261850: Find the denominators on the left side of 2x+7y=14.
Click here to see answer by Alan3354(30993)

Question 261850: Find the denominators on the left side of 2x+7y=14.
Click here to see answer by richwmiller(9135)

Question 261878: what is the y=mx+b form of these systems
x+y=4
2x+y=6
Click here to see answer by drk(1908)

Question 261891: Write an equation in Standard form using only intergers for the line described.
A line perpendicular to y=2/3x+5 (2,-3)
my start: y-(-3)=-3/2(x-2) (the correct answer is 3x+2y=0 but I can't get there)

Click here to see answer by Alan3354(30993)

Question 261893: Write an equation in standard form using only integers for the line described.
A line parallel to 5x-7y=35 (6,1)
(the correct answer is 5x-7y=23)
Click here to see answer by richwmiller(9135)

Question 261885: -2(3x-4) = 2x
I thought the variable is always moved to the left? What do I do in this case where there is no constant on the right?
I came up with 8 = 8x... sounds too easy to be right.
Thanks!
Click here to see answer by Earlsdon(6287)

Question 261954: i need help to write this in slope intercept form and then graphing it.
x+3y-3=0
Click here to see answer by dabanfield(803)

Question 261957: y= 1/2x +4
can work problem for the most part, need help graphing it. thx
Click here to see answer by checkley77(12569)

Question 261982: Please help me solve: The points (1, 2), (3, 7), and (10, t) lie on the same line. Find the value of t.
Click here to see answer by drk(1908)

Question 261979: Please help me solve: The points (-1, x) and (4, 3x+1) are on a line with slope -17. What is x?
Click here to see answer by solver91311(16885)

Question 262001: write the equation of each line that has the indicated slope,m, and y intercept,b. express final equations in slpe-intercept form.
m = -3, b = -4
Click here to see answer by solver91311(16885)

Question 262074: How do you graph the equation: y= -x + 7? Also how can you tell if it is a function?
Click here to see answer by richwmiller(9135)

Question 262074: How do you graph the equation: y= -x + 7? Also how can you tell if it is a function?
Click here to see answer by rfer(12660)

Question 262103: y=2x
Click here to see answer by richwmiller(9135)

Question 262113: How do you write y=1x-3 in standard form?
Click here to see answer by rfer(12660)

Question 262215: Graph the linear equation x-4y=10
Click here to see answer by drk(1908)

Question 262224: find the slope, it it exists of the line 6y+x=6y+10
Click here to see answer by Alan3354(30993)

Question 262220: Graph the linear equation x-4y=10
Click here to see answer by Alan3354(30993)

Question 262255: graph the linear equation x-5y=5
Click here to see answer by Stitch(352)

Question 262255: graph the linear equation x-5y=5
Click here to see answer by richwmiller(9135)

Question 262260: According to Newton's Law of Universal Gravitation, the gravitational force between two masses and separated by a distance is
.
The quantity is called the gravitational constant.
Solve for .

Click here to see answer by richwmiller(9135)

Question 262257: Having trouble solving this -x +5y + 10
solve for y in the form of y=mx +b, tell me the slope, tell the coordinates of the y-intercept.
Click here to see answer by Alan3354(30993)

Question 262256: solve for x, y, and z in the following systems of three equations:
10x+y+z=603
8x+2y+z=603
20x-10y-2z=-6
Click here to see answer by richwmiller(9135)

Question 262254: solve each system by the addition method. Hint: Rather than clear the decimals, multiply both equation by whole numbers to get +15and -15 for the x terms.
Click here to see answer by richwmiller(9135)

Question 262308: Please help me solve for x in the following problem.
2(3x-1) -4(2-x) = 3x+1
Click here to see answer by unlockmath(1599)

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