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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 531633: undefined slope; through (-1,3)
Click here to see answer by oberobic(2304)

Question 531630: through (-1,0);parallel to 5x+2y=2
Click here to see answer by oberobic(2304)

Question 531735: Graph the linear equation x + 7y= -8
Click here to see answer by oberobic(2304)

Question 531851: I need help with eliminations ,
3x-y=5
x-2y=11
Click here to see answer by ankor@dixie-net.com(22740)

Question 532222: Find the slope of the line that passes through (-16, 44) and (-54, -26).
Click here to see answer by stanbon(75887)

Question 532225: what is the slope of the line that passes through (1,9) and (-3,16)?
Click here to see answer by solver91311(24713)

Question 532262: How do i write an equation that is Coincident to 3x+y=-10
Click here to see answer by stanbon(75887)

Question 532263: Felisa jogged 3 miles in 25 minutes and then jogged 3 more miles in 30 minutes. What was her average speed in miles per minute?
Click here to see answer by solver91311(24713)

Question 532263: Felisa jogged 3 miles in 25 minutes and then jogged 3 more miles in 30 minutes. What was her average speed in miles per minute?
Click here to see answer by josmiceli(19441)

Question 532263: Felisa jogged 3 miles in 25 minutes and then jogged 3 more miles in 30 minutes. What was her average speed in miles per minute?
Click here to see answer by oberobic(2304)

Question 532257: What is the point that is common to the graph on both functions?
Y1 = 1/2 X+3
Y2 = -X-3
Click here to see answer by stanbon(75887)

Question 532304: Im stuck on how to solve the linear system on this problem.
y=6x-11
-2x-3y=-7
Click here to see answer by stanbon(75887)

Question 532290: (-5,2) x+4y=3
Click here to see answer by Alan3354(69443)

Question 532579: Hello! Please help me solve the following question, I honestly am so confused about how to solve it=(
Write the point-slope form of an equation of the line that passes through
(-2, 5) and has a slope of zero.
I was thinking it may be -2x+5y=0
Thank you!
Click here to see answer by stanbon(75887)

Question 532772: write the equation of the line that is perpendicular to the line y=2x+4 and passes through the points (6,3).
Click here to see answer by n183413(1)

Question 532836: If the equation of a line is y=4/3x+8 what is the equation of a line six away and parallel to the first line? It has to do something with being six away based off the length of the perpendicular.
Click here to see answer by lwsshak3(11628)

Question 532886: i forgot how to do slope intercept form because point slope confused me this week. My question is how do you write an equation in slope intercept with an equation like (3,1); slope=2
Click here to see answer by nerdybill(7384)

Question 532895: how do you solve 3+2/5b=11-2/5b?
Click here to see answer by stanbon(75887)

Question 532907: TRUE/FALSE: A line with a slope 1 alaways passes through the origin.
If false, please give a counterexample. Thank you!
Click here to see answer by swincher4391(1107)

Question 533110: write an equation that will give the answer y = 5 when x = 12
Click here to see answer by lmeeks54(111)

Question 533117: I'm confused. Can you please help? How do you write an equation in slope-intercept form for a line perpendicular to the graph of the equation that passes through the x-intercept of that line? - There aren't any given points. That is what throws me off.
y=2/3x - 6

Click here to see answer by scott8148(6628)

Question 533161: HOw do I solve for x so that the slope of the line through (x, 5) and (2, 2) is 1/4.?
Click here to see answer by lwsshak3(11628)

Question 533168: A line that passes through (8,4) and is perpendicular to 2x-y=-7
Click here to see answer by lwsshak3(11628)

Question 533179: I don't know how to solve the following and then graph the answer...
y = 2x - 6
x + y = 0

Click here to see answer by mananth(16946)

Question 533171: a line that passes throught (-6,1) and is parallel to x-15-3y=0
Click here to see answer by mananth(16946)

Question 533251: What is the y-intercept of the graph of y = 4x - 2?

8
0
1

Click here to see answer by richwmiller(17219)

Question 533358: P = (6,3), m = -1/3
Find the equation of the line containing the point P and having the slope m. Write the answer in slope-intercept form and Graph the line.
Click here to see answer by stanbon(75887)

Question 533366: hi, can you tell me how to solve the following??
X*10= 810
Click here to see answer by stanbon(75887)

Question 533593: Whats the equation of a line that is parallel to the equation y=1/2x-8 and goes through the point (-3,8)?
Click here to see answer by mananth(16946)

Question 533669: Find the equation of the line with the given properties. Express the equation in general form or slope-intercept form.
Perpendicular to the line 2x+y=-11; contains the point (-2,-8)
The equation of the line is ______(this is where u put your amswer if you can figure it out)lol and goodluck.
Click here to see answer by richard1234(7193)

Question 533699: Find an equation of the line containing the given point and having the given slope.(-2,-4) m=0
Click here to see answer by oberobic(2304)

Question 533695: I need to solve for x on the following equations. I honestly don't know what to do.
1).2x+4=28
2).17x-42=-39
3).7x-2=5x+10
4).3x-1-x=3x+5
5).-4(x+7)=-16
6).5(x+3)=7(x-5)
If youcould show the work on these, I might understand a lot better how to do it. Thank you.

Algebra is a scale. The goal is isolate the variable. Whatever you do to one side, do to the other side.
1. 2x + 4 = 28
First isolate the term containing x (2x) so subtract 4 from both sides.
2x + 4 - 4 = 28 - 4 --> 2x = 24
Now isolate x. Since it is multiplied by 2, divide by 2 so x is isolated.
(2x)/2 = 24/2 --> x = 12
17x - 42 = -39 Add 42 to both sides. 17x -42 +42 = -39 +42 --> 17x = 3
Divide both sides by 17.
(17x)/17 = 3/17 --> x=3/17
7x-2=5x+10 Get x terms on one side, so subtract 5x from both sides
7x-2-5x=5x-5x+10 --> 2x-2=10 Add 2 to both sides.
2x=12 divide both sides by 2
x=6

3x-1-x=3x+5 combine all the terms on each side (3x - x = 2x)
2x-1=3x+5 get the x's on one side, so subtract 3x from both sides
2x-3x-1=3x-3x+5 --> -x-1=5 add 1 to both sides -x-1+1=5+1 --> -x=6
Divide both sides by -1 (so we have x instead of -x)
-x/-1 = 6/-1 --> x=-6
-4(x+7)=-16 multiply -4 by each term inside the () (distribute it):
-4*x + -4*7 = -16 --> -4x -28 =-16 add 28 to both sides
-4x-28+28=-16+28 --> -4x=12 divide both sides by -4
(-4x)/-4 = 12/-4 --> x = -3
.5(x+3)=7(x-5) Distribute the numbers (multiply them by each term in the ())
.5*x +.5*3 = 7*x - 7*5 --> .5x+1.5=7x-35 subtract 7x from both sides, subtract 1.5 from both sides.
.5x + 1.5 - 1.5 -7x = 7x - 7x - 1.5 -35 --> -6.5x = -36.5 divide both sides by -6.5
(-6.5x)/-6.5 = -36.5/-6.5 --> x = 5.6153846...
x is approximately 5.6

Click here to see answer by fcabanski(1391)

Question 533812: Find the equation of the line which passes through the point (1,-2),
and has slope = 3
Click here to see answer by Edwin McCravy(20054)

Question 533852: how could you find the slope by looking at an equation of a line such as y = 3.2x?

Click here to see answer by Alan3354(69443)

Question 534068: how do i solve this problem
15c+10c=100
Click here to see answer by boilpoil(127)

Question 534104: y = 4x � 5. Use the graph to find the slope of the line.
Click here to see answer by bucky(2189)

Question 534161: The cost for hosting a dinner party at a restaurant are as follows, write a linear equation to represent the cost, and find the cost for 100 people
people cost
10 300
20 400
50 700
Click here to see answer by oberobic(2304)

Question 534179: what's the answer for this 3x+2y=5x+10
Click here to see answer by oberobic(2304)

Question 534230: How do you do substitution with linear systems?
y=-4
2x-2y=14
Click here to see answer by Maths68(1474)

Question 534229: Write the equation of the line, in standard form, that is parallel to the line and passes through the point (0, 5). I have the answer but do not know how they got it. Any help would be appreciated.
Thanks
Click here to see answer by fcabanski(1391)

Question 534339: -8x-10y=80
Click here to see answer by oberobic(2304)

Question 534339: -8x-10y=80
Click here to see answer by fcabanski(1391)

Question 534332: Hi! I need help in the following questions, it's only two. Please help and explain how and why you got what you got.
Directions: Write an equation for the line that is perpendicular to the given line and that passes through the given point.
1. (-1,-4); y= 1/6x+1
2. (-5,5); y= -5x+9
Please help, I know how to do it but when they twist it up like this i really don't get it. Please show all of the work and steps involved, and why. Thanks!
Click here to see answer by josmiceli(19441)

Question 534331: what is the slope and y intercept of the following:
y=6x+11
y=1/4x-2/7
what is an equation of a line with the following given slope:
m=1,b=-4

Click here to see answer by oberobic(2304)

Question 534395: The directions say : Write the equation of the line that contains the points. Express final equation in standard form.
(-2,-3),(2,7)
I already have m=5/2. I dont know how to write the equation.

Click here to see answer by oberobic(2304)

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