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

Tutors Answer Your Questions about Graphs (FREE)

Question 32219: Discuss a real life situation where a straight-line graph might be applicable and explain why you think this might be true.
Help, lol :)
Click here to see answer by stanbon(75887)

Question 31835: The amount of money that a salesperson makes varies as the total amount of sales made.If the sales person receives $7,500 for selling a house for $120,000 how much will he make if he sells a house for $ 150,000?
Click here to see answer by checkley71(8403)

Question 32538: passes through (-4,-2) parrallell to -7x-5y=58
Click here to see answer by mukhopadhyay(490)

Question 32516: I have a piecewise defined function to graph:
f(x) = {-1 if x<-1}
{1 if -1<=x<=1}
{-1 if x>1}
I get three lines that overlap so I know I'm wrong!
Thank you very much!
Click here to see answer by stanbon(75887)

Question 31908: I need some needed help with this.
Write an equation going thourgh the points (3,2)(-2,4)
I can only get to this point and then im stuck
4-2 / -2 - 3 = -2/5
Y=-2/5X + b
4=-2/5(-2) + B
from here i dont know what to do.
Click here to see answer by mukhopadhyay(490)

Question 32777: Find the slope and y-intercept of the line represented by each of the following equations. 2x-3y=6

Click here to see answer by stanbon(75887)

Question 32786: How do I Graph the solution set of x < �7.

Click here to see answer by stanbon(75887)

Question 32835: Plot points with coordinates (2, 3), (3, 4), and (4, 5) on a graph. What do you observe? Can you give the coordinates of another point with the same property?
I do not know how to create a graph in Excel to plot this...can someone help me?
Click here to see answer by josmiceli(19441)

Question 32853: I am struggling with this problem and don't know what it means or how to solve. Can anyone help me?
Find the constant of variation k.
m varies directly with n; m = 144 when n = 8

Click here to see answer by sarah_adam(201)

Question 32800: can you solve the equation m=500+.10x1200 and l=200+20x1200 thanks.

Click here to see answer by stanbon(75887)

Question 32899: How do I graph the solution set of x > -4
Click here to see answer by josmiceli(19441)

Question 32949: For the equation 4x � 2y = 6 find the
(a) slope 4/2
(b) y � intercept (0, -3)

Click here to see answer by sarah_adam(201)

Question 32950: Are the lines -2x + 3y = 6 and 2y = -3x + 4 parallel? Why or why not?
Click here to see answer by fz_shurtugal(3)

Question 32951: Solve the following equation
2x � 5 (4-x) = 3(2x � 6) + x � 2

Click here to see answer by checkley71(8403)

Question 33007: (y+2)/(y^2-y-2)+(y+1)/(y^2-4)=(1)/(y+1)
Click here to see answer by xcentaur(357)

Question 33069: PLease help!
The question needs to be explained step by step so I can explain and understand it for a project please?
Find the midpoint of the line segment PQ for P(2,-2), Q(3,4)
Thank you for your help.
Denise
Click here to see answer by sarah_adam(201)

Question 33089: Solve the following inequality--
2x + 8<= -16 + 8x
thanks in advance
Click here to see answer by Earlsdon(6294)

Question 33090: A rectangular yard is surrounded by a fence that is 4 feet longer than it is wide. If the perimeter of the fence is 424 feet, what are the dimensions of the yard it encloses?

Click here to see answer by Earlsdon(6294)

Question 33079: Please help explain and Solve?:
2 4
- (x+6)> - (x-8)
3 5
Express your answer in interval notation

Thank you!
Click here to see answer by mukhopadhyay(490)

Question 33149: 2)The volume of a cylinder (think about the volume of a can) is given by V = πr2h where r is the radius of the cylinder and h is the height of the cylinder. Suppose the volume of the can is 100 cubic centimeters.
a)Write h as a function of r.
Answer

b)What is the measurement of the height if the radius of the cylinder is 2 centimeters?
Answer
Show work in this space
Click here to see answer by sarah_adam(201)

Question 33207: W=gh-3ght^2; solve for g (The 2 is t squared). thanks
Click here to see answer by sarah_adam(201)

Question 33237: Solve the inequality and write the solution set in interval notation
(3/5)x + (2/3) (x - 5) < x
Click here to see answer by mukhopadhyay(490)

Question 33329: Write an equation of the line that is parallel to the given line and passes through the given point.
32.)y=2x+2, (3,2)
Click here to see answer by sarah_adam(201)

Question 33330: Write an equation of the line that is parallel to the given line and passes through the given point.
32.)y=2x+2, (3,2)
Click here to see answer by AnlytcPhil(1806)

Question 33410: Find the equation of the line with x-int -4 and y-int 6.
Click here to see answer by stanbon(75887)

Question 33248: Discuss a real-life situation where a straight-line graph might be applicable and explain why you think this might be true.
Think about a real-life situation that follows a linear equation, with the independent variable being years. What would the slope tell you about future years?

Click here to see answer by mszlmb(115)

Question 33259: (1)5x-y=5
(2) x+3y=6
(3) graph y=3x
(4) graph (-7, -4) and (-1, -10).
Click here to see answer by elima(1433)

Question 33231: graph y= 7x state the y-intercept
Click here to see answer by elima(1433)

Question 33165: Please explain in detail, I want to do the rest of them myself
Solve each compound inequality. State the solution set using interval notation and graph it

4. x <= 0 and x + 6 > 3

Click here to see answer by mukhopadhyay(490)

Question 33534: -2x-5y (less than or equal too) 10. Thanks in advance.
Click here to see answer by longjonsilver(2297)

Question 33566: which is an equation for the line that contains the points (-2, 3) and (2, -1)?

Click here to see answer by Nate(3500)

Question 33598: I need to make a table with integer values of x from -2 to 2. the problem is
Click here to see answer by checkley71(8403)

Question 33607: How do you graph 3x^2+6x-12
Click here to see answer by stanbon(75887)

Question 33596: How do i make a table with integer values of x from -2 to 2
y = - x - 1
Click here to see answer by Nate(3500)

Question 33623: I need Help!

1) An open-top box is to be constructed from a 6 by 8 foot rectangular cardboard by cutting out equal squares at each corner and the folding up the flaps. Let x denote the length of each side of the square to be cut out.
a) Find the function V that represents the volume of the box in terms of x.
Answer

b) Graph this function.
Show Graph here

c) Using the graph, what is the value of x that will produce the maximum volume?
Answer

Click here to see answer by mukhopadhyay(490)

Question 33645:

x.x +2x-15= -12
Click here to see answer by stanbon(75887)

Question 33714: Write an equation in slope-intercept form of the line that passes through the given point and is parallel to the graph of each equation.
y= -(two thirds)x+4; (1,-3)
Click here to see answer by venugopalramana(3286)

Question 33705: Give the coordinates of the vertex.
7) y = (x - 2)^2

A) ( -2, 0)

B) (0, -2)

C) (0, 2)

D) ( 2, 0)
Click here to see answer by venugopalramana(3286)

Question 33769: 1. Write a formula that describes the function for: A large pizza costs $12.00 plus 30 cents for each topping. Express the total cost C as a function of the number of toppings t.
2. Graph 5y - 3x >= 25
Click here to see answer by Nate(3500)

Question 33824: not sure of the appropriate topic for shifting:
given f(x)=x^2-8
shift f(x)2 units to the right I got h(x)=f(x-c)=(x-2)^2-8
shift f(x)2 units down I got h(x)=x^2+(-8-2)=x^2-6
shift f(x)2 units right and 2 units down I got h(x)=(x-2)^2+(-8-2)
Am I correct?
Click here to see answer by ice_water35(8)

Question 32959: Hi can you please help me?
How do you find the equation of a line that is graphed?
For example the problem that I have is graphed but it only shows one point of ordered pairs which is (3,1) The answer is supposed to be put in standard form but I don't know how to find the slope with only one shown set of ordered pairs.
Thank you,
Sasha
Click here to see answer by kietra(57)

Question 33515: Can you help me to understand and explain this? Thanks.
Conic sections are curves that are created by intersecting a right circular cone and a plane.
-Explain how these curves can be created geometrically.
-Are conic sections functions?

Click here to see answer by stanbon(75887)

Question 33980: Graph the following linear equations and advise points:
3x-2y=12
and
y=2x+5
thanks!
Click here to see answer by fanism(39)

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