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

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Question 21607: how do you graph this equation y>3x+4
Click here to see answer by venugopalramana(3286)

Question 21604: how do you graph this equation y>3x+4
Click here to see answer by venugopalramana(3286)

Question 22425: graph y-5=-2(x+3)
Click here to see answer by rapaljer(4671)

Question 23084: How can i estimate the roots of the equation, (y=x^2-4) by using a graph?
Click here to see answer by rapaljer(4671)

Question 23083: How can i estimate the root of the equation using a graph, (y= x^-2x-8)
Click here to see answer by rapaljer(4671)

Question 23126: What is slope-intercept form?
Click here to see answer by wuwei96815(245)

Question 23129: x>7/8y +5
2x>=3/4y+7
Determine if the given points are solutions to the given systems of inequalities.
a. The point is a solution to the system
b. The point is not a solution to the system.

Click here to see answer by stanbon!(97)

Question 23125: I need to graph y=3 sin x and y = sin 3x on the same axes. I am really confused and do not know where to start.
Click here to see answer by venugopalramana(3286)

Question 22401: The hourly wage y of an employee at a certain production company is given by y=0.25x + 9 where x is the number of units produced in an hour.
a) complete the table and graph the results
X 0 1 5 10
Y
B) Find the number of units thatmust be produced each hour to earn an hourly wage of $12.25.
Click here to see answer by elima(1433)

Question 23145: Graphing whew!? Question for you. Thanks for your assistance.
1. Is (-2,6) a solution to 7x+3y=4 AND 8x+7y=26?

2. Solve the system of equations by graphing. If the system is inconsistant or the equations are dependent, state that.
y=2x+1
y=-2x-3
Click here to see answer by venugopalramana(3286)

Question 22571:

Is (-4,7) a solution to the equation 



3(x - 10) = 6y 



Jamie 


Click here to see answer by AnlytcPhil(1806)

Question 22334: y=x+2
Click here to see answer by rapaljer(4671)

Question 23154: I need a little help in graphing which I don't understand. Thank you for your help!
Graph the following equalities. Make sure you shade correctly and pay attention to the 'equal' portion. Also, this should be in cartesian coordinate system (ie x-y graph not a line graph)
#26 y > 5
#27 -2y > 10
#28 5+2y < 3y-2

Click here to see answer by stanbon(75887)

Question 23144: I don't have a clue how to complete. Help!

Graph the solution:
3x+y > 6 / y < -3x-2

Click here to see answer by stanbon(75887)

Question 22132: How do Yougraph and solve {3x+4y=2
x-y=1

Click here to see answer by rapaljer(4671)

Question 21617: what is the system of equations by graphing on a grid :
x+y=1
2x+y=4
Click here to see answer by rapaljer(4671)

Question 23149: I have a graphing project that I have to submit, but I am not quite sure I know how to do what is ask of me.here's what i,m told to do:
I need to research ,pick, or create ten equations that when solved and graphed will make a figure,shape, or pattern of some kind. I have to solve it mathematically showing how you arrived at x-axis answers, and y-axis answers. after solved each equation and showed how you arrived at each e and y-axis answer, draw a graph and plot the points for each equation on graph paper. Connect the points to show your figure , shape, or pattern. All of the figures, shapes, and/or patterns must be different. Can you please give me some kind of example showing how it is to be done?
Click here to see answer by stanbon(75887)

Question 22090: I have just starting with algebraic graphs . I know how to plot the graghs. What is don't understand is how to plot the equation. I also don't know how to get the possible values for x and y. Could some body help me please.
Click here to see answer by stanbon(75887)

Question 22223: How would I graph the inequality x+y>2?I need to graph it in one of the following three methods:
quadrants:I,III,IV;includes boundary line
quadrants:I,II,IV;excludes boundary line
all four quadrants;excludes boundary line
thanks

Click here to see answer by stanbon(75887)

Question 22002: I'm in algebra one is 7th grade, and i hope you can help. I'm doing these two problems and i have no idea how to solve them.
Here are the directions: Set up each inequality and show all work. Written explanations should be in complete sentences.
Jesse has 27 coins, some of which are dimes and the rest are quarters. Altogether the coins are worth more than $4.20. At least how many of the coins are quarters? At most how many are dimes?
Mr. A and Mrs. N are leaving school and traveling in opposite directions. If Mrs. N runs 2 miles per hour and Mr. A runs 5 miles per hour, how long would it take them to be at least 15 miles away from each other?

Click here to see answer by stanbon(75887)

Question 22046: y = 7
x = 4
find the slpe y & x interceop and graph show the work
i have no idea what to do. thanks for your help
Click here to see answer by rapaljer(4671)

Question 23197: Hi,
I have been working this problem and I can not get the proper answer. Please help!
Whitney invested $38,000, part at 2% and part at 12%. If the total interest at the end of the year is $2,760, how much did she invest at 2%?
Thank you
Sherri
Click here to see answer by stanbon(75887)

Question 23201: Here is another type of graph. I am getting very confused. In my text book it shows different symbols but does not explain what they are. There are arrows that go both ways, however there are o's that are blacked out, has either a diagonal line or an x going through the o's. What do they mean? Our text book does not explain much, it assumes that everyone is not a re-beginner with algebra.
Solve and graph the solution set. 8x + 8 > 7x + 9
Thank you for your time and help
Sherri

Click here to see answer by venugopalramana(3286)

Question 23200: Here is another type of graph with extra numbers I am getting very confused.
Solve the following system of linear inequalities by graphing.
3x + 4y < 12
x + 3y < 6
x > 0
y > 0
Thank you for your time and help
Sherri

Click here to see answer by venugopalramana(3286)

Question 23198: I have been reading almost all the ways to do a graph that has been posted and I am still confused. Here is a problem that I am not clear on.
Solve the following system of linear inequalities by graphing.
x + 2y < 3
2x � 3y < 6
Thank you
Sherri

Click here to see answer by venugopalramana(3286)

Question 23204: defining equation rule:
y=-2/3x+4
domain=
range=
function?
Click here to see answer by stanbon(75887)

Question 22022: I have to solve this equation, but I can't figure it out -51 is less than or = to x=38

Click here to see answer by rapaljer(4671)

Question 22543: What are some specificExamples of situations When we would use graphs, how could we read them, And what form would we graph them in?
Click here to see answer by rapaljer(4671)

Question 23221: I need your help! Thank you so much for your assistance!
Graph the system:
y>2x+4
y<-x+8
Click here to see answer by rapaljer(4671)

Question 23236: hey, im in algebra 1 and if i dont pass w/ a passing grade i get kicked out. I can't understand this part in the book where it says rate of change and its trying to explain the equation to me but i don't understand what there trying to tell me. it says something about
(triange) length
---------------
(triangle) weight
can you help explain it to me in words that i can understand?
Click here to see answer by rapaljer(4671)

Question 22407: use the slope and y-intercept to graph each equation.
x-y=1
x+y=3
x-y=4
2x + y = 2
2x - 5y = 15
Click here to see answer by rapaljer(4671)

Question 22430: The topic is graph this equation
2x+y=-2
3x-6y=-3
-2x+y=-2
and finally
1/4x+3/4y=6
Click here to see answer by rapaljer(4671)

Question 22124: Y>-4
Click here to see answer by rapaljer(4671)

Question 22185: Graph the following piecewise-defined function
{ 3x-5 if x>0
f(x)= { 5 if x=0
{ x^2 if x<0
Click here to see answer by stanbon(75887)

Question 21144: write the equation of the line in slope- intercept form that passes through (-2,7) with a slope of 3
Click here to see answer by stanbon(75887)

Question 21967: write a equation of a given line that passes parrella through the given point? x+y=3 (5,4)
Click here to see answer by stanbon(75887)

Question 23260: Sound travels through water at an approximate rate of 1500 meters/second.
a)Write an equation describing d, the distance in meters that sound travels in t seconds.
-I know that d=rt so that would make the equation d=1500t
b)Graph the equation from part (a) by choosing three ordered pairs (t,d) that satisfy the equation. Label the coordinates of the 3 points you used. Be sure to label your axes.
-I'm not exactly sire how to graph this equation especially on such a small graph
(c) What is the slope of the line you graphed in part (b.)
(d) A whale-watching boat's sonar determines that it takes sound waves a total of three seconds to reach a pod of whales and return to the boat. How many metera is the pod of whales from the boat?
Click here to see answer by stanbon(75887)

Question 23262: I have a question for you regarding the substitution method.
Solve the system with the substitution method.
x=4y-3
-3x-y=0
Thank you for your assistance!
Click here to see answer by stanbon(75887)

Question 22537: What is the equation of a line, that passes thru (0,4) and is parallel to the line 4y-20=3x. And the equation must be in standard form.
Click here to see answer by venugopalramana(3286)

Question 23128: What do you do when writing an equation of a line given 2 points?

What do you do when writing an equation of a line given slope and y intercept? x intercept?

How do you find a y intercept? x intercept?

How do I graph a line given an equation of Ax+By=C? y=mx+b?
Click here to see answer by venugopalramana(3286)

Question 21120: What are the x and y intercepts for this equation:4.50x+5.50y=452
Click here to see answer by venugopalramana(3286)

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