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

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Question 478511: Find the slope of a line perpendicular to the line that passes through the following points (3,9) and (7,15)
Click here to see answer by lwsshak3(11628) About Me 

Question 478709: How do you know when an equation has an infinite number of solutions?
How do you know when an equation has no solution?

Click here to see answer by solver91311(24713) About Me 
Question 478709: How do you know when an equation has an infinite number of solutions?
How do you know when an equation has no solution?

Click here to see answer by mananth(16946) About Me 

Question 298252: Exactly how many cubic centimeters of ice cream can an ice cream cone hold (within the cone) if its height is 6.4 centimeters and the radius of its base is 1.5 centimeters? Include correct units with your solution. Use "pi" for π.

Click here to see answer by wilft1(217) About Me 

Question 479068: how to solve equation
3[(15-3)^/4]

Click here to see answer by Alan3354(69443) About Me 

Question 479066: how to solve equation
3y+20=3+2y

thank you

Click here to see answer by Alan3354(69443) About Me 
Question 479066: how to solve equation
3y+20=3+2y

thank you

Click here to see answer by oberobic(2304) About Me 

Question 479064: solve equation 3|3x-4|-7=5
Click here to see answer by robertb(5830) About Me 

Question 479065: solve equation |3x+5|=1
thank you

Click here to see answer by robertb(5830) About Me 

Question 479090: how do you graph the linear equation: x+2y=-1?
Click here to see answer by Tatiana_Stebko(1539) About Me 

Question 479155: how do i graph x+y=2
Click here to see answer by Tatiana_Stebko(1539) About Me 

Question 479379: Finding the equation of a line given the following points:
(-2,-5) (-8,-6)

Click here to see answer by rfer(16322) About Me 

Question 479527: Sales equal $.15x number of e-readers sold -$28 or assuming x equal the number of e-readers sold this would be the same regression equation. Sales equal 0.15x -28.
Click here to see answer by jorel1380(3719) About Me 

Question 479523: Sketch the graph of the following equations. y=-4x

Click here to see answer by wilft1(217) About Me 
Question 479523: Sketch the graph of the following equations. y=-4x

Click here to see answer by jorel1380(3719) About Me 

Question 479548: Consider the graph of g (x) = x^2
Use transformations to write an equation for each of the following descriptions:
1.The graph of g(x) shifted to the left 4 units.
2. The graph of g(x) shifted 4 units to the right and 2 units downward.
3.Sketch g(x)= (x+3)^2-3

Click here to see answer by lwsshak3(11628) About Me 

Question 479542: (ill put a <_ or _> sign for greater or less/ equal to)
3x - 8 > -8 or -5x <_ -35
a. x > 0
b. 0 < x <_ 7
c. x < 0 or x _> 7
d. x _> 7

Click here to see answer by Tatiana_Stebko(1539) About Me 

Question 479563: In the equation f(x) = 1/(x+4)^2 -5 How do I combine and express this as a ratio of polynomials? I found the Horizontal and verticle asymtotes, I want to know how to express and combine as a ratio of polynomials. Thanks!
Click here to see answer by ccs2011(207) About Me 

Question 479740: what is 4/15 as a percent and how did you get it?
Click here to see answer by Alan3354(69443) About Me 

Question 479909: Factor completely
7x^3y-343xy

Click here to see answer by tinbar(133) About Me 

Question 479913: factor the given polynomial completely. If the polynomial is prime say so.
6x^2+29x+9

Click here to see answer by MathLover1(20849) About Me 

Question 480074: find the slope if it exist y=-2.79x
Click here to see answer by Alan3354(69443) About Me 

Question 480085: i need help with graphing 6x-2y=0
Click here to see answer by Alan3354(69443) About Me 

Question 480187: Graph the line describe by the equation 3x+2y=6
Show the procedure.

Click here to see answer by Tatiana_Stebko(1539) About Me 

Question 480184: Find the x-and the y-intercepts of -x+2y=8
Click here to see answer by Tatiana_Stebko(1539) About Me 

Question 480266: What does "y > 4x – 2; y < = –3x – 1" look like on a graph ?
Or even how to graph it .

Click here to see answer by Alan3354(69443) About Me 

Question 480529: how do i graph x+2y=10, -x+4y=-8
Click here to see answer by ewatrrr(24785) About Me 

Question 480143: Which of the following points lie in the solution set to the following system of inequalities?
y < -3x + 3
y < x + 2

Click here to see answer by ewatrrr(24785) About Me 

Question 480586: A line passes through the point (-2,-5) and is perpendicular to the line -2x+y=9
what is the equation of the line?

Click here to see answer by ewatrrr(24785) About Me 

Question 480585: How do I determine the height of the laser beam 30 ft away from the face of the building if the equation is y=-(2/3)x+30?
Please show the graph work so that I may compare.

Click here to see answer by htmentor(1343) About Me 

Question 480734: x-6y=-7
9x-8y=-17

Click here to see answer by mananth(16946) About Me 

Question 480861: What is the midpoint of the line segment that runs between (-3, 1) and (1, 5)?
Click here to see answer by ewatrrr(24785) About Me 

Question 480738: Graph 3x less than y
Click here to see answer by mananth(16946) About Me 

Question 480895: what are the x and y intercepts of
8x+6y=13

Click here to see answer by Alan3354(69443) About Me 

Question 480909: graph of y = – |x + 2| + 3
Click here to see answer by stanbon(75887) About Me 

Question 481013: Would someone assist me with this, please?
My problem says this:
Soft Drink Taste Test A soft drink company wishes to introduce a new soft drink. The company is considering two flavors, lemon lime and cherry cola. In a sample of 125 people, it was found that
80 liked lemon lime.
68 liked cherry cola.
42 liked both types.
c) How many liked either one or the other or both?
d) How many did not like either flavor?
How do I draw a Venn Diagram to obtain these answers? Could someone draw a diagram for me on how this should look? Thank you so much.

Click here to see answer by ewatrrr(24785) About Me 

Question 481024: I am needing some assistance, please. If you can help, I will be grateful. Thank you! Also, could you kind of break it down so that I can get a better understanding of it? Unfortunately, I'm confused.
The problem says:
Determine the following: A ∪ B′
Let
U = {1, 2, 3, 4, 5, 6, 7, 8}
A = {1, 2, 4, 5, 8}
B = {2, 3, 4, 6}
The photo:
http://www.flickr.com/photos/62474130@N03/6036660666/

Click here to see answer by MathLover1(20849) About Me 
Question 481024: I am needing some assistance, please. If you can help, I will be grateful. Thank you! Also, could you kind of break it down so that I can get a better understanding of it? Unfortunately, I'm confused.
The problem says:
Determine the following: A ∪ B′
Let
U = {1, 2, 3, 4, 5, 6, 7, 8}
A = {1, 2, 4, 5, 8}
B = {2, 3, 4, 6}
The photo:
http://www.flickr.com/photos/62474130@N03/6036660666/

Click here to see answer by stanbon(75887) About Me 

Question 481033: Solve the system of equations by graphing.
y= -3x +3
6x+y=6

Click here to see answer by stanbon(75887) About Me 

Question 481054: I am not understanding how to find the slope and y intercept of a line, Problem is 10x= 9y+81

Click here to see answer by Alan3354(69443) About Me 

Question 481034: Solve the system of equations by graphing.
x= 6y +1
2x-12y= 2

Click here to see answer by mananth(16946) About Me 

Question 481211: Hey,
I need help with this problem:
i need to graph the following system of equations, and solve the system to find the points of intersection:
1) y=sqrt(144-x^2)
2) y=16-x
I need the "For Dummies" version, please - including a brief review of graphing circles/half circles, lines, etc.

Click here to see answer by Alan3354(69443) About Me 

Question 481262: Solve and graph the solution set.
A) 5y + 3 is less than or equal to -2 or -7 is greater than or equal to 0.
B) x-9 < 3x-4 < x+8

Click here to see answer by lwsshak3(11628) About Me 

Question 481419: Problem says this:
The Wildlife Federation surveyed 220 San Diego residents. The results are as follows:
32 had a membership to the Birch Aquarium
57 had a membership to the San Diego Zoo
21 had both
Answer the following questions:
i. How many had only a zoo membership?
ii. How many had only an aquarium membership?
iii. How many belonged to either one or the other or both?
iv. How many belonged to neither?
In addition to answering the questions, it says to construct a Venn Diagram. How Do I make a Venn Diagram? Could someone show me how this should look?
Also, explain to me how you arrived at your answers for the Venn Diagram? Thank you so much.

Click here to see answer by mananth(16946) About Me 

Question 481534: I'm struggling with this. I need to find the vertex, line of symmetry, and the max or min value of f(x).
The equation is f(x)=1/3 (x+7)^2 + 9

Click here to see answer by Theo(13342) About Me 

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11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 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