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

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Question 203986: What is a sign of D mena and discriminant mean and how does an example of an equation look?
Click here to see answer by vleith(2983)

Question 203985: I need help with this one , i am struggling in this calss and it is about to end and I need to get help badly... We appreciate your help and God bless ya. Here"s the question: Translate the following into a quadratic equation and solve it: The length of a rectangular garden is four times its width; if the area of the garden is 196 quare meters, what are it's dimensions?
Click here to see answer by vleith(2983)

Question 203987: What is a sign of D mena and discriminant mean and how does an example of an equation look?
Click here to see answer by Alan3354(69443)

Question 203984: what 3 techniques can be used tp solve a quadratic equation? demonstrate these techniques on the eqution "x^2 -10x-39 =0"
Click here to see answer by nerdybill(7384)

Question 203984: what 3 techniques can be used tp solve a quadratic equation? demonstrate these techniques on the eqution "x^2 -10x-39 =0"
Click here to see answer by jsmallt9(3758)

Question 204173: what does g(x) and f(x) mean and what purpose do they serve?
Click here to see answer by RAY100(1637)

Question 204285: Could someone tell me if this is right or not?
Indicate whether the graphs of the following will have a maximum or minimum.
a) f(x)=8x-3x^2 (is maxi right?)
b) f(x)=x^2-9 (maxi?)
c) f(x)=-(3-x)^2 (mini?)
Click here to see answer by jim_thompson5910(35256)

Question 204312: Hi everyone, I have had some trouble with the following graphing problem.
If someone could show me how to do it I would be really grateful.
I need to Find the y-intercept of the straight line passing through points (-3,1) and (-1,-2).
I really want to learn how to solve these types of equations, so steps and explanations would be nice.
Thnaks, -Nick.
Click here to see answer by stanbon(75887)

Question 204337: draw a graph of the equation Y=X2+x-6
Click here to see answer by stanbon(75887)

Question 204304: Find the slope of : 2-1/5y=9x
Click here to see answer by RAY100(1637)

Question 204384: Sketch the graph of the function defined by f(x)=(1)/(x-3). Give the equation of it's vertical asymptote.
Click here to see answer by Earlsdon(6294)

Question 204358: Brendan enjoys mountain biking. He has found that the maximum gradient up which he can cycle is 0.3 and the maximum gradient that he caan safely descend is 0.5. His map has a scale of 2 cemtimeters to 1 kilometers with contours every 25 meters.
Click here to see answer by Alan3354(69443)

Question 204437: Graph.
x + y < 1
How would i graph this? do i need to solve it at all or leave it as is?
Click here to see answer by Alan3354(69443)

Question 204437: Graph.
x + y < 1
How would i graph this? do i need to solve it at all or leave it as is?
Click here to see answer by vleith(2983)

Question 204418: The drama club is selling tickets to a play for $10 each. The cost to rent the theater and costumes is $500. In addition the printers are charging $1 per ticket to print the tickets. How many tickets must the drama club sell to make a profit?

Click here to see answer by ankor@dixie-net.com(22740)

Question 204539: 1) By looking at two linear equations, how can you tell that the corresponding lines are parallel? Give examples
Thanks,
Click here to see answer by jojo14344(1513)

Question 204553: Find the slope of the line that contains the points (−2, −5) and (3, −1).

Click here to see answer by vleith(2983)

Question 204541: (3) When graphing a linear inequality, how do you know if the inequality represents the area above the line? Give examples.

Click here to see answer by Theo(13342)

Question 204586: find the slope and the y-intercept for y=-6x
Click here to see answer by ichudov(507)

Question 204652: x� + 5x + 4
-----------
(x + 3)�
divided by
x + 1
------
x� - 9

Multiply and express the product in simplest form.
Click here to see answer by lazi(15)

Question 204652: x� + 5x + 4
-----------
(x + 3)�
divided by
x + 1
------
x� - 9

Multiply and express the product in simplest form.
Click here to see answer by Edwin McCravy(20054)

Question 204641: Graph:
y ≥ 2x + 1
How would i graph this? do i need to solve it at all or leave it as is?
Click here to see answer by Alan3354(69443)

Question 204640: Find the LCD of the follwing fractions:
(1.)
3 3 1
- , - , -
4 8 5

(2.)
3 3 1
- , - , -
a b 5

I THINK THE LCD OF THE FIRST SET OF FRACTIONS IS 40... AM IN RIGHT? I DONT KNOW HOW TO SOLVE THE SECOND SET THOUGH. THANK YOU!
Click here to see answer by Alan3354(69443)

Question 204781: y=4x-9
Click here to see answer by Earlsdon(6294)

Question 204843: use the graph of y=x^2+4x-5 to answer the following:
determine the solution(s) to the equation x^2+4x-5=0
Click here to see answer by Earlsdon(6294)

Question 204853: Solve and graph the solution on the number line: 4x-11<3x+2
Click here to see answer by stanbon(75887)

Question 204857: Find the equation of the line that contains the point (1,0) and is perpendicular to 2x+y=-4.
First, find the slope:
2x+y=-4
2x-2x+y=-2x-4
y=-2x-4
Slope is -2.
The slope of the perpendicular line would be the reciprocal of -2 with the sign changed. Reciprocal of -2/1 is -1/2 and changing the sign gives 1/2.
Slope is 1/2.
I know we then need to find the y intercept and find the value of b; however, I cannot figure out how to get to this point. Please assist in helping me from here to solve this problem. Once I see the work, I then understand how to do it and can work backwards to do them in the future.
Thanks for the help! BTW, this is due Sunday, so I need it before then if possible. Thanks again.
Click here to see answer by Alan3354(69443)

Question 204880: Hi all, I am having some trouble with vectors at the moment, I was hoping someone could show me how to do the following problems correctly.
a) Find the distance between (2, -3, 1) and (-1, 0, -3)
b) Find the maginitude of the vector ~w = 2~i - ~j + 4~k. (The ~ symbols represent an arrow above the values in the positive direction, I didnt know how to express this properly)
Any help would be great,
Thanks, -Nick.
Click here to see answer by Alan3354(69443)

Question 204777: How do you know which test point to plug in to determine wether to shade up or down for the equation?

Click here to see answer by RAY100(1637)

Question 204954: answer to
Through (-3,4);horizontal is it 3x+4y=0?
" " (-2,8) m = -1 is it 2x + y= -8?
" " (-4,7); parallell to 3x+4y = 4
" " (-4,7); perpendicular to x-2y = 0
" " (2,-7) and (3,-1) is it x-6y=44?

Thank You, really struggling through this stuff!!!
Click here to see answer by Alan3354(69443)

Question 204999: Can anyone help me with this assignment. I have tried for two days to do this one and I cannot figure them out. I do appreciate whatever anyone can do. Thank you so very much.

Refer to the graph given below and identify the graph that represents the corresponding function. Justify your answer.
y = 4x
y = log4x

Plot the graphs of the following functions. Scan the graphs and post them to the Facilitator along with your response.
1. f(x) = 5x
2. f(x) = 4x+2
3. f(x) = (1/3)x
4. f(x) = log5x

Click here to see answer by stanbon(75887)

Question 205140: What is the solution of the system
9y-6x=12
6x-9y=-12
Click here to see answer by checkley77(12844)

Question 205173: Suppose you want to cover the backyard with decorative rock and plant some trees as the first phase of the project. You need 30 tons of rock to cover the area. If each ton cost $60 and each tree is $84, what is the maximum number of trees you can buy with a budget for rock and trees of $2,500? Write an inequality that illustrates the problem and solve. Express your answer as an inequality and explain how you arrived at your answer.
Click here to see answer by stanbon(75887)

Question 205172: You are planning to spend no less than $6,000 and no more than $10,000 on your landscaping project. Write an inequality that demonstrates how much money you will be willing to spend on the project.

Click here to see answer by Edwin McCravy(20054)

Question 205225: Solve this by graphing 2x-y=4 and 2x-y=3
Click here to see answer by checkley77(12844)

Question 205228: Please help me graph the following:
(x-2)^2+y^2=5
and
(y+2)^2-x^2=16
Thank you
Click here to see answer by Alan3354(69443)

Question 205275: 16<6-2y<24
Click here to see answer by Alan3354(69443)

Question 204670: Hi all, Im still having trouble with these graphing problems, I need to;
Find equation of the line plane through the three points:
(1,-1,-2),(2,1,2) and (-2,0,-7)
Im not sure how to do it, so a solution with steps and explanations would be great.
Thanks, -Nick
Click here to see answer by Alan3354(69443)

Question 205277: What is the solution set of
x/x+9>0
Click here to see answer by edjones(8007)

Question 205280: |2z-5|<25
Click here to see answer by Earlsdon(6294)

Question 205308: Write the equation of a line whose slope is 6 and whose y intercept is -3.
thank you
Click here to see answer by stanbon(75887)

Question 205283: -3|2z|+3≤7
Click here to see answer by stanbon(75887)

Question 205274: 16<6-2y<24
Click here to see answer by stanbon(75887)

Question 205326: Without graphing, identify the slope and the y-intercept for the line associated with the equation.
5x+20y=60
Is the slope -5?
Thanks for your time and your help.
Click here to see answer by Edwin McCravy(20054)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 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