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

Tutors Answer Your Questions about Graphs (FREE)

Question 571095: six donuts were bruoght at the same price for three dollars what is the greatest number of donuts that can be bought for seven dolars
Click here to see answer by stanbon(57290)

Question 571119: What is the slope and y-intercept of 30x+5y=20
Thanks
Click here to see answer by mananth(12270)

Question 571181: How would the following equation be represented graphically:
-3x+y=4
Click here to see answer by Alan3354(30993)

Question 571302: Scenario: Advertiser's of a new refrigeration process claimed that the temp of a freezer, which starts at -2 degrees Celsius, can be reduced by 1 degree per minute.
To write an expression, define a variable for the time in minutes use this variable to write a rule for the temperature.
I already have a predone graph that goes from 5 to -5 degrees on the vertical and on horizontal it goes from -5 to 5 in time. There is also a predetermined diagonal line on the graph that spans from 3 degrees celsius on the horizon to 3 degrees on the time line and on this line it has a dot at intersecting point -2 celsius and 0 on the minutes, it also has one below that on -3 degrees and 1 on minutes.
At the bottom of the graph the question asks to enter the y intercept of the line and then asks to enter the slope of the line. I'm failing 9th grade algebra and I dont quite understand the question so any help would be greatly appreciated and if you could explain how its done to where I could possibly understand it would be even better. Thank you in advance.
Click here to see answer by KMST(1868)

Question 571697: h= -2t^2. I need to find the value for h and t, and than plot the relaitons over the range of -3 to 3, not sure how to do this.
Click here to see answer by Alan3354(30993)

Question 571698: How do I graph y= -2x + 2 over a range -3 to 3?
Click here to see answer by KMST(1868)

Question 571698: How do I graph y= -2x + 2 over a range -3 to 3?
Click here to see answer by Alan3354(30993)

Question 571696: z= 3f^0 Plot each algebraic relations over the range -3 to 3 for independent variable. Not sure how to graph this at all. Detailed explenation would be much help. Thankyou
Click here to see answer by Alan3354(30993)

Question 571903: Hello I've got 4 questions I really need your help with. Please help me. I need it asap. Thank you
1. Find the y-intercept and the x-intercept for the equation.
-10x+y=14
What is the y-intercept?

What is the x-intercept?

2. Graph the equation and identify the y-intercept.

x+3y=12

3. Solve.
8y-8<7y-1

4. Find the slope if it exists.

x+7y=14
m=

Click here to see answer by mananth(12270)

Question 571921: Please help me solve this. I need it asap. Thanks
1. Find the y-intercept and the x-intercept for the equation.
-10x+y=14
What is the y-intercept?

What is the x-intercept?
Click here to see answer by Maths68(1474)

Question 571926: Graph on a coordinate plane
x > 2y
Click here to see answer by Edwin McCravy(8895)

Question 572109: Find an equation of the line having the given slope and containing the given point.
m=2/3, (2,-8)
Click here to see answer by nyc_function(2733)

Question 572657: How do you write an equation that is parallel to y=4x-3?
How do you write an equation that is perpendicular to y=4x-3?
Click here to see answer by josmiceli(9668)

Question 572730: if one line has a slope of -3 and another has a slope of 2, which line is steeper? why?
Click here to see answer by richard1234(5390)

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(12270)

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(15646)

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(16877)

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(5390)

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(30993)

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(2733)

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(507)

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(6957)

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(1868)

Question 575277: trying to remember how to find the vertex when f(x)=-3x^2
Click here to see answer by nerdybill(6957)

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(16877)

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(30993)

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

Click here to see answer by jim_thompson5910(28536)

Question 576073: 3a+3-6a > 15
Click here to see answer by jim_thompson5910(28536)

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(9668)

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(6957)

Question 576640: find the x intercept of the graph of 2x +5y -10= 0
Click here to see answer by rfer(12655)

Question 576642: find the y intercept of the graph of 2x +5y -10= 0
Click here to see answer by rfer(12655)

Question 576690: Please help me solve this equation.
3/5 (3x-3) > 9
Click here to see answer by ankor@dixie-net.com(15646)

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(28536)

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(30993)

Question 577246: how do i solve a point slope eqaution
Click here to see answer by josmiceli(9668)

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(57290)

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(28536)

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(16877)

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(2733)

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