Questions on Algebra: Graphs, graphing equations and inequalities answered by real tutors!

Tutors Answer Your Questions about Graphs (FREE)

Question 573457: I need help solving this equation!
2x - 7y is less than or equal to 4
I have to get it to the slope-intercept form so I can graph it and I'm stuck, looking for the 'B' part in y=mx+b. Please help me! Please and thank you. :D
Click here to see answer by mananth(16946)

Question 573454: I need help solving this equation!
2x - 7y is less than or greater to 4
I have to get it to the slope-intercept form so I can graph it and I'm stuck, looking for the 'B' part in y=mx+b. Please help me! Please and thank you. :D
Click here to see answer by ankor@dixie-net.com(22740)

Question 573502: what is the equation of the point (3,2) and has a slope of 2?

Click here to see answer by Maths68(1474)

Question 573970: post your 50 word response to the following question: What does the graph of interval [-4, 10] look like?
Click here to see answer by solver91311(24713)

Question 573970: post your 50 word response to the following question: What does the graph of interval [-4, 10] look like?
Click here to see answer by richard1234(7193)

Question 574108: I need help in understanding how to teach my daughter with graphing 4 inequality problems from her homework,I have tried to help my daughter and I can not remember how to do this
The instructions on her homework read "Graph the following inequalities" each need to be on their own grid
1. x > 5
2. x <= -1
3. -3x - 1 <= -7
4. 3(x - 2)< 2(x + 1)
Any help would be greatly appreciated. Could you show the work so I can also understand how this is done. Thank you.
Click here to see answer by Alan3354(69443)

Question 574244: Solve the system of equations
x+y=6
x-y=-7
Set the first equation to: x=6-y, and solve the second equation:
(6-y)-y=-7
-y-y=-7-6
-2y=-13
y=13/2=6.5
Now solve the first equation with the newly found y value of 13/2 to obtain x:
x+(13/2)=6
x=6-(13/2)
x=-1/2=-0.5
You can check the answer by verifying if the two values satisfy either equation:
-0.5+6.5=6, which is correct and -0.5-6.5=7, which is correct as well.

Click here to see answer by student100(1)

Question 574427: What's the differences between using the y=mx+b unlike the formula m=y2-y1/x2-x1 to find the slope?

Click here to see answer by nyc_function(2741)

Question 574651: determine the value of k so that the graph of the equation passes through the given point.
kx + 4y = 2; (-1,2)
3x - ky = 1; 93,40
kx - 2y = -10, (-2,5)
trying to help grand-daughter and its been a long time since I was in school. Thank you
Click here to see answer by reviewermath(1029)

Question 574725: Hello,
Pls help me to solve this:

Select the pair of equation whose graphs are perpendicular;
A)2x - 8y = 9 & 12x - 3y = 7
B)3x + 6y = 8 & y = 2x - 8
C)y = 2x - 7 & x + y = 3
D)2y = -3x +5 & 2x + 3y = 4

Thanks
P.S:(This is the 2nd time that I am submitting this problem without receiving any answer)
Click here to see answer by nerdybill(7384)

Question 574724: Greeting,
would you pls help me with this problem (This is the 2nd time that I am submitting this problem without receiving any answer :is it so difficult that no one could even try to solve it?)
Which equation can be use to solve the following word problem?
Sam has 6 more nickels than dimes & the total value of his coins is $2.10.
How many nickels does he have? Let n represent the number of nickels.

Thanks a lot

Click here to see answer by bucky(2189)

Question 574849: Graph y = 3x - x^2. need to find the y. Use the values of x provided in the table to find the y values.How do i find the y values??? and How do I graph this? Help Me If you Can. Thank You
x
-2
-1
0
1
2
3
4
5
Click here to see answer by KMST(5328)

Question 575277: trying to remember how to find the vertex when f(x)=-3x^2
Click here to see answer by nerdybill(7384)

Question 575497: For the equation z=3f^0. I know that z is the vertical Axis and F is the Horizontal. I am plotting the ranges -3 to 3. I understand that I need to make up a value for each Letter. What would be the best value for the Letter so it is easier to plot on the graph. If Z is 2, and than I have the 3f^0. Is my value for f 3? and than do I do 2x3= 6 plus 0 and than my asnwer is still 6. Would I plot the 3, 2, and 6 on the graph? Or is the calculations not necessary? I have somewhat of an idead, but not a full one.
Click here to see answer by solver91311(24713)

Question 575489: can you tell me how to solve x-y=3.
the question ask to use the y-intercept and slope to sketch the graph.
I think i have to set x as 0 but I'm not sure how to solve or set it up.
so far i have y=x-3
Click here to see answer by Alan3354(69443)

Question 576051: what is the slope intercept form of y+6=2(x+2)

Click here to see answer by jim_thompson5910(35256)

Question 576073: 3a+3-6a > 15
Click here to see answer by jim_thompson5910(35256)

Question 576124: Have a good idea on how to graph this equation. h= -2t^2. h is the vertical axis and t is the horizontal, and and ^2 would be raised to ^3, and I am plotting from -3 to 3, so would it be a straight Line? I know I am probably way off.
Click here to see answer by josmiceli(19441)

Question 576264: Write an equation of the line containing the given point and parallel to the given point express your answer in the form y=m+b
(-7,9) 5x=7y+6
The equation of the line is y = ?

Click here to see answer by nerdybill(7384)

Question 576640: find the x intercept of the graph of 2x +5y -10= 0
Click here to see answer by rfer(16322)

Question 576642: find the y intercept of the graph of 2x +5y -10= 0
Click here to see answer by rfer(16322)

Question 576690: Please help me solve this equation.
3/5 (3x-3) > 9
Click here to see answer by ankor@dixie-net.com(22740)

Question 577024: If a line has no y-intercept, what can you say about that line? What if a line has no x-intercept?
Click here to see answer by jim_thompson5910(35256)

Question 577148: compare the graph of each function with the graph of f(x)= x^2
1.g(x)=x^2-2
2.g(x)=2\3x^2
3.g(x)=5x^2+3
4.g(x)=-x^2+4
can u please help. Thank You
Click here to see answer by Alan3354(69443)

Question 577246: how do i solve a point slope eqaution
Click here to see answer by josmiceli(19441)

Question 577267: How do I graph and determine the solution set of:
x=7-2y
y=3x
What i tried to do was set them to zero, but I didn't know what else to do..please help!
Click here to see answer by stanbon(75887)

Question 577553: 7( x + 4) - 13 > 12 + 13(3 + x)
I am having problems with this one, can you break it down for me
Click here to see answer by jim_thompson5910(35256)

Question 577610: Dear Tutor,
My question involves "Graphic Representation of Radicals of the Second Order" in Algebra 2. I know that the length of the hypotneuse of a right triangle equals the square root of the sum of the lengths of the two legs. The problems I'm having trouble with are the square roots of 15, 24, 34. Theres also one with 1/2 in front of the square root of 5. There is a question similar to this on algebra.com, but i do not understand what the tutor is saying about how to solve it. I have tried all posible square root possibilties but nothing adds up to 15, 24, or 34. My dad tried to help me, but the answers given in the book dont make sense. I have posted this question everywhere. I really hope u can help me. This is all Greek to me.
Sincerely,
A Really Confused Algebra 2 Student
Click here to see answer by solver91311(24713)

Question 577656: I am working on algebra homework involving circles and identifying the center and radius.
I got part of this equation correct, some of it by guessing.
I need assistance figuring out the radius please.
My problem is as follows.
Identify the center & radius of the circle written in standard form.
Center (x,y) ( , )
Radius,
x^2 + (y+5)^2=27
I figured out/guessed, (x,y) is (0, -5)
I dont know how to figure the radius. I have tried 27, 27^2, 729, all incorrect
I am at a loss. I would appreciate any help possible. Thank you.
Click here to see answer by nyc_function(2741)

Question 577653: I am working on algebra homework. I have tried this problem several times and am missing something.
Write an equation in general form of a circle with the given properties
Center at (-2,7); r=8 sqrt (5)
my answer was x^2 + y^2 + 4x - 14y - 267 = 0 marked incorrect
i tried a different equation and got it right. I dont know where I am making a mistake. Here is the one I tried and got correct but will not get credit for.
(-9,3); r=4 sqrt (2)
answer x^2 + y^2 +18x - 6y + 58 = 0
Click here to see answer by Alan3354(69443)

Question 577657: I am working on graphing circles in algebra.
I have tried several ways to work this problem. I keep coming up with the same answers and I am at a loss to solve this equation.
Instructions are:
Graph circle.
x^2 + y^2 -2x +2y -7 =0
I came up with (2,-2) r=7
I am assuming this general form equation needs to be transformed into a standard form equation to find (h,k) and radius
I am not sure what to do differently from what I have tried.
I would appreciate your assistance in solving this problem.
Thank you.
Click here to see answer by mananth(16946)

Question 577752: y= -4x
Click here to see answer by jim_thompson5910(35256)

Question 577765: Please help me solve this equation y=2x^2-1
Click here to see answer by richard1234(7193)

Question 577769: Graph the line with slope -3 passing through the point (-3,4)
Click here to see answer by lwsshak3(11628)

Question 577884: find the slope of the line that contains (-4,6) (6,6)
Click here to see answer by jim_thompson5910(35256)

Question 578083: Riza is 25 years old while her brother was born. After the sum of their ages is 105. What is the age of riza and her brother today?
Click here to see answer by ankor@dixie-net.com(22740)

Question 578237: f<-3/2 name three solutions of the ineqality, then graph
Click here to see answer by jim_thompson5910(35256)

Question 578362: Write an equation that corresponds to the given inequality.
y<4
Click here to see answer by jim_thompson5910(35256)

Question 579046: x+y=9
Click here to see answer by nyc_function(2741)

Question 578834: i need help on graphing absolute value equations but it is not on this site of what i know of.
Click here to see answer by richard1234(7193)

Question 579228: y-2=1/3(x+1) what is the y-intercept form and what does is look like on a graph?
Click here to see answer by mananth(16946)

Question 579793: How do you use a graphing calculator to graph f(x)=x^7-2x^5 on an interval of (-2,2)? I am unfamiliar with my ti-83 graphing calculator, and do not know how to plug this in. Also, I do not know how to find the max and min. Can you please help me to understand how to do this?
Click here to see answer by stanbon(75887)

Question 579544: im having trouble in school and i need help on how to graph -3x+2y=-6
Click here to see answer by KMST(5328)

Question 580070: Write an equation in slope-intercept form of the line satisfying the given conditions. Perpendicular to the line y = 2x + 3; containing the point (-2, -4).
Click here to see answer by dfrazzetto(283)

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