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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 55248: Please help w/ the following:
What is the slope of the line 6x-3y=54?
Thank you.
Click here to see answer by funmath(2925)

Question 55218: I used your solver for finding the equation of straight line given 2 points I entered these 2 points (7,3) and (9, -2). The answer that came back shows the slope to be -2.5 But when I do y2-y1 and x2-x1 I get -5/2 so what did I do wrong. This is a problem on my homework and I would appreciate your input. Thanks, D Steele
Click here to see answer by stanbon(57224)

Question 55261: x + y = 4
Click here to see answer by tutorcecilia(2152)

Question 55263: determine the x - intercept and y - intercept of the graph of the equation.
x + y = 4
Click here to see answer by tutorcecilia(2152)

Question 55178: write an equation in slope-intercept form for the line that satisfies each set of conditions.
PASSES THROUGH (1,-1),PARALLEL TO THE LINE THAT PASSES THROUGH (4,1) AND (2,-3)
Click here to see answer by funmath(2925)

Question 55430: Stuck, can someone help?
Graph 3x + 2y = 6.
Click here to see answer by funmath(2925)

Question 55431: Find the slope of any line perpendicular to the line through points (6, 3) and (7, 7).
Click here to see answer by funmath(2925)

Question 55464: write the general equation form of the line which passes through the 2 points: (1,2), (6,7)
Click here to see answer by tutorcecilia(2152)

Question 55464: write the general equation form of the line which passes through the 2 points: (1,2), (6,7)
Click here to see answer by Edwin McCravy(8880)

Question 55458: Find the equation of the line that is parallel to 2x-y=4 and contains the point (2,-3).
-y = -2x + 4
-y = 1/2(x + 4)
-y = 1 + 2
Click here to see answer by Earlsdon(6287)

Question 55449: Please help w/ the following:
M(6,-5) is the midpoint of RS. If S has coordinates (14,0), find the coordinates of R.
Thank you.
Click here to see answer by venugopalramana(3286)

Question 55498: Graph the following equation; calculate the slope, x-intercept, and y-intercept, and label the intercepts on the graph.
y = x + 3
Hi, I can't seem to understand this problem I am having major issues with this, can you please help?
Thanks a bunch

Click here to see answer by stanbon(57224)

Question 55482: Help, I'm very lost - if I could get help solving this one the rest should come back to me, I hope.
6.2(x - 15.1) = 9.3(-x - 3.2)
Thank you for your help.
Click here to see answer by ankor@dixie-net.com(15624)

Question 55382: Please solve the system of linear equation by the addition method.
x+2y=1
3x+4y=0
Click here to see answer by ankor@dixie-net.com(15624)

Question 55536: If f(x)=4x-3 find the following:
f(-1)
McGraw Hill 6th edtion, chapter 7.5 exercise #30
Thanks for your time!!!!

Click here to see answer by stanbon(57224)

Question 55537: If f(x)=5x-1 find the following;
f(a-2)
McGraw Hill 6th edtion,chapter 7.5,exercise # 36
Thanks so much for your time!!!!
Click here to see answer by stanbon(57224)

Question 55584: graph the equation; calculate the slope, x-intercept and y-intercept and label the intercepts on the graph
2x + 3y = 9
Thought I had this one - but I'm way off. Are graphs always this hard?
Click here to see answer by stanbon(57224)

Question 55661: please help me solve y-4x=8
Click here to see answer by tutorcecilia(2152)

Question 55712: Can anyone help me find the slope of a line with
6x+2y=8
I cannot seem to get x
I think it is 1.3

Click here to see answer by stanbon(57224)

Question 55743: can you help me understand what to do with these equations especially with the brackets?
39. 2y-3(y+1)=-(5y+3)+y
41. 2[3z-5(2z-3)]=3z-4
43. -8m-[2(11-2m)+4]=9m
Click here to see answer by checkley71(8403)

Question 55770: how do u turn 5y=5x+10 into a standard form y=mx+b
Click here to see answer by funmath(2925)

Question 55829: I don't get this graphing thing - please help!
Graph the equation; calculate the slope, x-intercept and y-intercept and label the intercepts on a graph. 4.2x = 3.8y = 1.9
I'll eventually get this, but the help is most appreciated
Click here to see answer by checkley71(8403)

Question 55827: I don't get this graphing thing - please help!
Graph the equation; calculate the slope, x-intercept and y-intercept and label the intercepts on a graph. 3x= -2
Thanks again for the assistance
Click here to see answer by checkley71(8403)

Question 55831: o.k., one more for today, thank you everyone who helped me!
A temperature of 41 degrees F is equivalent to 278.2 degrees K, while a temp. of 86 degrees F is equivalent to 303.2 degrees K. Find the converting Kelvin temp. to Fahrenheit. What is the Fahrenheit temp. when it is 180 degrees K?
Word problems stump me....
Click here to see answer by Edwin McCravy(8880)

Question 55846: find an equation of the line that contains the given pair of points.
(0,7) and (7,0)
Click here to see answer by stanbon(57224)

Question 55900: Business and finance. The cost of producing a number of items x is given by
C = mx + b, in which b is the fixed cost and m is the variable cost (the cost of
producing one more item).
(a) If the fixed cost is $40 and the variable cost is $10, write the cost equation please.
Thank you

Click here to see answer by funmath(2925)

Question 55902: sketch the graph 1/[x^2-1]
Click here to see answer by stanbon(57224)

Question 55921: I really need your help with theses questions.
Write an equation in slope-intercept form of a line with the following characteristics. Perpendicular to the graph of: y = 3/2x-3 with a y-intercept of 5.
Write an equation in slope-intercept form of a line with the following characteristics: parallel to the graph of: -4x+3y=12 and passes throught the orgin.
Click here to see answer by stanbon(57224)

Question 55931: find the distance between the points:
a(2,5) and b(4,-1)
Click here to see answer by funmath(2925)

Question 55929: Graph the following; calculate the slope, x-intercept and y-intercept and label the intercepts on a graph.
4.2x+3.8y=1.9
Thanks!
Click here to see answer by funmath(2925)

Question 55967: I really need your help.
Write the equation in slope-intercept form of the line passing through each pair of points: (6,-2) and (3,-4)
Write the equation in slope-intercept form of the line passing through each pair of points: (-8,2) and (0,6)
Thank you...
Click here to see answer by Lacey020991(49)

Question 55957: I hope you can help me..
Write the equation in slope-intercept form of the line passing through each pair of points:(6,-2) and (3,-4)
Write the equation in slope-intercept form of the line passing through each pair of points:(-8,2) and (0,6)
Write an equation in slope-intercept form of a line with the following characteristics: Parallel to the graph of: x+y=6 and passes through (1,-4)
Click here to see answer by Hook(36)

Question 55930: Find an equation in slope-intercept form passing through the points (-6.2, 18.1) and (3.4, 18.1)
...any help here would be appreciated!
Click here to see answer by Lacey020991(49)

Question 56026: solve the following system by graphing y=x+5
3x-3y=-15
Click here to see answer by Lacey020991(49)

Question 56024: Given the equation f(x)=25x decide whether each function in linear. If it is, give its slope and state whether it represents direct variation.
I wrote that it is a linear equation and the slope is 25/1. My questions are what exactly is direct variation and I'm I correct in saying that it is linear?
Click here to see answer by stanbon(57224)

Question 55958: Dear tutor, I am trying to graph this problem, but Im a little unsure of my answer, can you graph f(x)=-2x+2, I also need help with these other problems to complete my assignment....

rewrite the equation -x-10y=50 as a function of x
given f(x)=4x-5, find f (a-1)
given f(x)=5x2(above the x)-3x+1 find f(-2)
Click here to see answer by ankor@dixie-net.com(15624)

Question 56132: Let g be a linear function. If g(1)=3 and g(-4)=c, find the value of the constant c such that the line will have a slope equal to -1.
Also, could you solve this one?
12x-45=-{48-12x+3}
Click here to see answer by funmath(2925)

Question 56153: List and verify two intercept points (ordered pairs) that are solutions for the equation 5x – 4y = 20?

Click here to see answer by funmath(2925)

Question 56157: The difference of 2 numbers is 11. The second is 3 less than 2 times the first. What are the 2 numbers?
Click here to see answer by Cintchr(481)

Question 56112: The difference of two numbers is eleven. The second is three less than two times the first. what are the two numbers?
Click here to see answer by checkley71(8403)

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