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

Tutors Answer Your Questions about Graphs (FREE)

Question 473014: Graph the function y= x+2 for 1 Help, how do you do this?
Click here to see answer by MathLover1(20849)

Question 473040: 2x + 5y < 10
Click here to see answer by MathLover1(20849)

Question 473179: Two persons are to run a race, but one can run 10 meters per second, whereas the other can run 6 meters per second. If the slower runner has a 70-meter head start, how long will it be before the faster runner catches the slower runner, if they begin at the same time?
Click here to see answer by amoresroy(361)

Question 473400: I keep getting two different answers for this problem..Please help.
Find the indicated outputs for:
f(x)= 5x2 -2x
f(0)=
f(-1)=
f(2)=

Click here to see answer by stanbon(75887)

Question 473401: 25% of what number is 10%
Click here to see answer by stanbon(75887)

Question 473404: on three consecutive passws, a football teams gains 6 yards, loses 26 yards, and gains 23 yards. what number represents the total net yardage?
Click here to see answer by stanbon(75887)

Question 473397: Train A and B are travling in the same direction on parallel tracks,
Train A is traveling at 80 miles per hr and Train B is traveling at 90 miles per hr.
Train A passes a station at 12:10am
Train B passes the same station at 12:22am
at what time will Train B catch up with Train A?
Click here to see answer by ankor@dixie-net.com(22740)

Question 473467: I have to find the points between (-4,-1) and (-8,-4)
there is no graph or picture just ask me to find the distance between these two points?
Click here to see answer by stanbon(75887)

Question 473557: Solve linear equation by graphing
x+1=0
y-3=0
please show work and graph...thanks
Click here to see answer by stanbon(75887)

Question 473704: By 3:00 PM, John had plowed 7 driveways and by 5:30 PM he had completed 13.
a) Find John�s plowing rate in number of driveways per hour.
b) Find John�s plowing rate in minutes per driveway

Click here to see answer by stanbon(75887)

Question 473823: f(x) = 2x � 8
g(x) = ?
How else can you describe the two lines in this inconsistent system?
Click here to see answer by MathLover1(20849)

Question 473891: Sketch the graph of
Click here to see answer by Alan3354(69443)

Question 474039: Find the y-intercept for -3x � 2y = 12
Click here to see answer by rfadrogane(214)

Question 474063: y=3/2x+1
Click here to see answer by Tatiana_Stebko(1539)

Question 474065: GRAPH THEORY - definitions
I want to understand the term "simple graph". I understand a simple graph is one having no loop ie no node is connected to itself. However, a simple path is a set of nodes and arcs where no node is repeated. So an image of methane (CH4) would be simple because it has no loop and yet is not a simple path because the central node is repeated when traversing the graph.
Can you please clarify?
Jon
Click here to see answer by richard1234(7193)

Question 474122: how do you graph the system of linear inequalities
4x-2y<8
x+3y<6
x+y>4
x-y > or = 6
Click here to see answer by ewatrrr(24785)

Question 474214: Graph the system of inequalities and shade the regions that are solutions.
y>= x+1 y<= x-1
Click here to see answer by Alan3354(69443)

Question 474293: choose the graph of y= 3x^2-6x
Click here to see answer by solver91311(24713)

Question 474304: divide
4x^2-2x-2/x-1
Click here to see answer by stanbon(75887)

Question 474304: divide
4x^2-2x-2/x-1
Click here to see answer by MathLover1(20849)

Question 418681: I have to create a regression graph using the X and Y axis that I come up with from the following word problem:
Scenario: Regression equations are created by modeling data, such as the following:
Sales = (Cost Per Item � Number of Items) � Constant Charges
In this equation, constant charges may be rent, salaries, or other fixed costs. This includes anything that you have to pay for periodically as a business owner. This value is negative because this cost must be paid each period and must be paid whether you make a sale or not.
Your company may wish to release a new e-reader device. Based on data collected from various sources, your company has come up with the following regression equation for the sales of the new e-reader:
Sales = $0.15 � number of e-readers sold � $28
Or, assuming x = the number of e-readers sold, this would be the same regression equation:
Sales = 0.15x � 28
In this case, the values are given in thousands (i.e., the cost of making an individual e-reader will be $150 [0.15 � 1,000], with $28,000 [28 * 1,000] in constant charges).

I came up with x = 560/3 and Y = 28000. Is this correct?
Click here to see answer by brnthrt(1)

Question 474460: -5+13a-12>21a-11
Click here to see answer by stanbon(75887)

Question 474534: Can someone please help me, Thanks.
Value of computer software. The value v of a shopkeeper�s inventory software program, in hundreds of dollars, is given by
v=-3/4t+6
where t is the number of years since the shopkeeper first bought the program. Graph the equation and use the graph to estimate what the program is worth 4 yr after it was first purchased.

Click here to see answer by sofiyac(983)

Question 474535: Please help, Thanks.
Value of computer software. The value v of a shopkeeper�s inventory software program, in hundreds of dollars, is given by
v=-3/4t+6
where t is the number of years since the shopkeeper first bought the program. Graph the equation and use the graph to estimate what the program is worth 4 yr after it was first purchased.

Click here to see answer by sofiyac(983)

Question 474323: Sales = 0.15x � 28
In this case, the values are given in thousands (i.e., the cost of making an

ividual e-reader will be $150 [0.15 � 1,000], with $28,000 [28 * 1,000] in constant charges).
Answer the following questions based on the given regression equation:
1.Using the graphing program that you downloaded from www.padowan.dk/graph, graph the sales equation. Discuss the meaning of the x- and y-axis values on the graph. (Hint: Label the axis with the Text tool in the graphing program.)
2.Based on the results of the graph and the sales equation provided, discuss the relationship between sales and number of e-readers produced. (Hint: Consider the slope and y-intercept.)
3.If the company does not sell a single e-reader, how much is lost in sales? Mathematically, what is this value called in the equation?
4.If the company sells 5,000 e-readers, how much will the company make (or lose) in sales?
5.If sales must equal 100 thousand, how many e-readers will your company need to sell? (Round up to the nearest e-reader.)
6.If your company is hoping to break even, how many e-readers will need to be sold to accomplish this? (Round up to the nearest e-reader.)

Click here to see answer by jeronsr(1)

Question 475067: 1.) How do you solve 3x+2 is less than or equal to -2x+7
2.) How do you solve -x/7>2
Click here to see answer by lwsshak3(11628)

Question 475086: write the equation of a line (in slope intercept form)/ that goes through (10,4) and has a slope of one-fifth
Click here to see answer by nerdybill(7384)

Question 475097: Find the slope and y-interecept of the line represented by -9x +-7y=-2
Click here to see answer by Tatiana_Stebko(1539)

Question 475159: What is the y=mx+b form of "x-4y=12"
Click here to see answer by nerdybill(7384)

Question 475159: What is the y=mx+b form of "x-4y=12"
Click here to see answer by rfer(16322)

Question 475098: write the equation y= (four-thirds)x-1 in the standard form using only integers and a positive coefficient for x
Click here to see answer by solver91311(24713)

Question 475341: Use FOIL to find the product (2b+9)(5b+7)
Click here to see answer by Theo(13342)

Question 475339: Line/ goes through the point (5,2) and is perpendicular to the line through(-2,1) and (-4,-2). Find the equation (in slope form) for/.
Click here to see answer by mananth(16946)

Question 475673: Find the x- and y-intercepts for the equation. Please show all of your work. Then graph the equation and submit your graph through the dropbox.
y = -6x � 8
Click here to see answer by mananth(16946)

Question 475681: Find the slope of the line containing the given pair of points. If the line is undefined, state so. Please be sure to show all of your work.
(3, 7) and (-5, 1)
Click here to see answer by jim_thompson5910(35256)

Question 475697: graph the linear function using the slope and y intercept
f(x)= -8/9x
Click here to see answer by MathLover1(20849)

Question 475709: i want to plot a graph in same axis with different range for example: in x-axis with the range(10^-4 10^-2 1 10^2 and 10^4) i want to plot this in origin software . would you help me please
Click here to see answer by richard1234(7193)

Question 475379: prove that every path is gracefull.
Click here to see answer by richard1234(7193)

Question 476027: x/5 - y/10 = 4 and 3x/4 + 2y/3 = 8
In order to earn credit for the slope and intercepts, you must explicitly write each of these sentences, filling in the blanks with the correct values for that Use either elimination or substitution to find the solutions (if any).
Graph the two lines, and list the x-intercepts, y-intercepts, and points of intersection.
A. For equation ___________
1. The x-intercept is ___.
2. The y-intercept is ___.
3. The slope is ___.
B. For equation ___________
1. The x-intercept is ___.
2. The y-intercept is ___.
3. The slope is ___.
Click here to see answer by lwsshak3(11628)

Question 476273: Write the standard form of the equation of the line through the pair of points (7,-6) and (2,1). Write the equation using only integer coefficients.
Click here to see answer by Alan3354(69443)

Question 476319: Okay, i have 4 points i had to graph
A(-2,3) B(-2,9) C(5,9) D(5,3)
The question i need help on is:
Find the length of the diagonal from A to C.
PLEASE HELP ME! Thank you!
Click here to see answer by Theo(13342)

Question 476317: Find the equation of the line that goes through the points (-4,1) and (-1,4)
Click here to see answer by Alan3354(69443)

Question 476486: Are the two sets equal, equivalent, neither or both? Explain your answer. V = {cat, dog, bird}; W = {bird, dog, cat, mouse}
Click here to see answer by stanbon(75887)

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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