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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 604665: through:(-2,4), parallel to y=-5/2x+5
Click here to see answer by Alan3354(69443)

Question 604669: 3(4x+1)=9-5(4x-3)
Click here to see answer by rfer(16322)

Question 604781: can you help me..because it so confusing..how to find the slope and y-intercept in this equation ??
x+y/2=4
thank you..
Click here to see answer by jim_thompson5910(35256)

Question 604762: 9. Find the equation of the line that goes through the points (-4,1) and (-1,4)
Click here to see answer by jim_thompson5910(35256)

Question 604765: Write the slope intercept equation for the line that passes through (14,-2) and is perpendicular to 7x-10y=18
Click here to see answer by alicealc(293)

Question 604804: Find the equation of the line containing the point (4,-2)and having the slope m=6
Click here to see answer by alicealc(293)

Question 604821: Just checking to see if I did this problem correctly.
Find the equation of the line that goes through the points (-4,1) and (-1,4)
I found the slope of -1/-1 or -1
y = x + b
4 = -1 + b
5 = b
answer y = x + 5 ??
Click here to see answer by Alan3354(69443)

Question 604901: Have to table and graph the following equation. 4x - 2y = 6. I need help with understanding the equation. I have to show work.
Click here to see answer by Alan3354(69443)

Question 603875: y=-2/3x-4 i would like to know how to graph this linear equation
Click here to see answer by jim_thompson5910(35256)

Question 605062: The values for two linear equations are listed below. What is the solution to the system of equations represented by these data? Equation A: (2,5), (-4,-7), (5,11), (-1-1)
Equation B: (5,11), (-3,-13),(0,-4),(1,-1)

I think if I use the midpoint formula on two pairs of points for each equation and then I can use that to make 2 equations for this problem. Am I correct? If not, then I am completely lost. I have no idea how to find an equation using 4 points.
Click here to see answer by mananth(16946)

Question 605206: Consider the equation 3x+5y=6 a) Give the equation of a line parallel to the above line.
b) Give the equation of a line perpendicular to the above line.
Click here to see answer by mananth(16946)

Question 605330: Find the equation of the line passing through the points (3,8) and (2,5)
Click here to see answer by jim_thompson5910(35256)

Question 605465: Graph the linear equation. 3x-4y= 24
Click here to see answer by stanbon(75887)

Question 605506: How do you write an equation from a graph? we are given a square grid with Y axis numbered with 4, 2, 0, -2, -4 and then X axis with -4, -2, 0, 2, 4. and then a line intersecting at y at the 2 and x at the 2. we haven't really tried anything because we don't know where to start. Thanks.
Click here to see answer by Edwin McCravy(20055)

Question 605587: How can you tell the difference between a linear and standard equation.
Click here to see answer by solver91311(24713)

Question 605698:
Click here to see answer by mathie123(224)

Question 605852: Determine whether the lines are parallel, perpendicular, or neither.
-8-5x=8y
-8x+5y=5
Click here to see answer by lwsshak3(11628)

Question 605884: I'm trying to classify the system and determine the number solutions without graphing
-5x-2y=10
-10x-4y=20
A. Consistent, dependent
B. consistent , independent
C. Inconsistent
D. None of these
Email llthomas83@yahoo.com
Click here to see answer by jim_thompson5910(35256)

Question 605908: What does the graph look like if i had equations
7x-3y=4
-x-8y=4
Click here to see answer by solver91311(24713)

Question 605953: slope of a roof. What is the slope of a 7 in 12 roof? How much does the roof rise in 15 horizontal feet? My book says the answers are .58 and 8.75. I got the .58 and can't understand how to get the 8.75.
Click here to see answer by scott8148(6628)

Question 606020: What is the slope intercept form of x-4y=-20

Click here to see answer by Alan3354(69443)

Question 606219: what is the equation of a line with a slope of 4 and passes through point (1,-4)?
Click here to see answer by mathie123(224)

Question 606359: Using y-mx+b write an equation for a line that goes through the poings (8,0) (6, -8).
i would say that m=0-(-8)/8-6 which is 8/2 or 4
so -8=4(0)+m
Click here to see answer by ewatrrr(24785)

Question 606480: graph y=2^x

Click here to see answer by Edwin McCravy(20055)

Question 606514: Hi I need help with my son's 5th grade math, yes, I do not understand it and it is frustrating me... He is working on Problem solving: working backward. He starts at an ending point and must find the starting point. like on a graph. Here is an example. (x,y) Ending is (6,5), 3 to the left, (9,5) 2 down (9,7) 4 to the right (x,y). I thought I figure it out (5,7). Which I did but the way the book explains it, I did it wrong... So confusing help please!!!!
Click here to see answer by rfer(16322)

Question 606607: how to prove the identity sin x / 1-sinx - sin x / 1+sin x = 2tan^2 x
Click here to see answer by lynnlo(4176)

Question 606833: Here is my problem. A botanist finds that the height of a tree, in cm, is related to its age, in weeks, by the equation y=3x+1. Graph this equation
Click here to see answer by solver91311(24713)

Question 606843: 13+2c+3+5c
Click here to see answer by ewatrrr(24785)

Question 606814: what is y when -3+2y=0
Click here to see answer by Alan3354(69443)

Question 606850: What is x-4+7x-9?
Click here to see answer by asuar010(338)

Question 607225: y-7=3/2(x-4) how do you do the fraction part
Click here to see answer by Alan3354(69443)

Question 607272: graph x <= -3
Click here to see answer by stanbon(75887)

Question 607336: I'm trying to find missing coordinates to complete the ordered pair solution to the given linear equation.
y=8x+4
a. (0, ?)
b. (3, ?)

Click here to see answer by ewatrrr(24785)

Question 607352: I am totally stuck, I do not know where to start any help would be greatly appreciated. Thanks
Determine how many solutions exist
Use either elimination or substitution to find the solutions (if any)
Graph the two lines, labeling the x-intercepts, y-intercepts, and points of intersection

x/3 - y/5 = 4 and 3x/4 + 2y/3 = 6
Click here to see answer by richwmiller(17219)

Question 607343: 1.If f(x) = 4x2 - 3x + 2, evaluate f(-1).

2.State the domain of the function f(x) = (x+3)/(x-1).

3.Write the equation of the line that passes through the points (1, 1) and (2, Write your answer in slope-intercept form.

4.Write the equation of the line with a slope of 2/3 and y-intercept of 1. Write your answer in slope-intercept form.

5.Solve the equation: (4x+1)(2x-7) =0.

6.If f(x) = 4x + 3, evaluate f(x+h).

7.If g(x) = x�, evaluate g(x+h).

8.If f(x) = -x + 1, evaluate f(x+h).

9.If f(x) = -x + 1, evaluate f(x-h).

10.Use the quadratic formula to solve the equation: x� - x - 1 = 0.

Click here to see answer by richwmiller(17219)

Question 607423: find the slope if it exists, of the lines containing the pair of points.
(-8,-11) and (-20,-19)
Click here to see answer by rfer(16322)

Question 607221: find the value of x so that the line joining the points (x,3) and (2,1) is parallel to the line joining (x,5) and (-1,2).
Click here to see answer by ankor@dixie-net.com(22740)

Question 607424: find an equation of the line having the given slope and containing the given point.
m=6/7, (8,-1)
Click here to see answer by ewatrrr(24785)

Question 607455: show that the points[-2,-5]lies on the line 2y=3x-4
Click here to see answer by asuar010(338)

Question 607460: Find the x-intercept of the graph
Click here to see answer by richwmiller(17219)

Question 607516: I am having major trouble with slopes. Find the slope of (-3,2) and (3,-3) every answer I have tried is not correct. I had some yesterday that I could not do that had x and y variables and I had a hard time with it as well. Any tricks or tips that may make it click with me?
Thanks a bunch!
Click here to see answer by Alan3354(69443)

Question 607511: How to find the intercepts for the graph of the equation given. 7x-2y=14

Click here to see answer by alicealc(293)

Question 607457: cnsider the equation 2x+3y=12,write this equation in slope intercept form
Click here to see answer by ankor@dixie-net.com(22740)

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