Tutors Answer Your Questions about Graphs (FREE)
Question 103026: Hello, I am having problems trying to convert a real-life situation and create an equation or inequality that could be used for analysis, prediction, or decision making. I have to draw a graph to depict the variables in my situation. Lastly, I have to use my graph and what I know about linear inequalities to discuss the significance of my findings. The situation that I have created so far is the following:
"Last year, I had bought a brand new ‘06’ Pontiac Vibe. Now as time goes by, the selling price for my car decreases in value as it becomes older. In this situation, the equation of the selling price is y = -Ax + B, the B represents the minimum price at which I would sell my car and A is the slope of increment. Since the selling price decreases in value within each passing year, the slope appears with a negative sign. The negative slope indicates the amount by which the selling price decreases per year."
I don't have exact figures, I was just going to make up the figures. I have the scenario, but now I don't know what to do from here. Please Help, Thank You so much!!
Click here to see answer by stanbon(75887)  |
Question 103066: gwen and jean have an argument before a bike ride. so they leave riding in opposite directions. riding on a huffy jean rides 10 mph faster than gwen. after riding 6 hours they are 180 miles apart. at what speed was gwen riding? I need help setting up the equation. would it be 180r+6(r+10)=180?
Click here to see answer by stanbon(75887) |
Question 103069: Jared invests part of his $10,000 inherritance at 7% and the rest at 9%. If the total return on his investment is $840 how much did he invest at each rate? Did I set up the problem correctly? I know it's P*R*T=I, so would it be .07x+.09(10,000-x)=840?
Click here to see answer by stanbon(75887) |
Question 103069: Jared invests part of his $10,000 inherritance at 7% and the rest at 9%. If the total return on his investment is $840 how much did he invest at each rate? Did I set up the problem correctly? I know it's P*R*T=I, so would it be .07x+.09(10,000-x)=840?
Click here to see answer by cwatts1818(1) |
Question 103056: I do not understand this question - please help me
Find the slope of the line through the given points. Also find the slope intercept form. Find the Y intercept and the X intercept for one of the points.
(-7/5, 3/10) and 1/5, -1/2)
Click here to see answer by oberobic(2304) |
Question 103166: Task:
A. Graph the function f(x) = –3x + 7. Be sure to properly label the graph, which includes labeling the axes and the line with its equation.
B. Graph the function f(x) = –3x2 + x – 5. Be sure to properly label the graph, which includes labeling the axes and the graph with its equation.
Click here to see answer by MathLover1(20849)  |
Question 103193: This is about graphing lines.
You have to find the x intercept form and the y intercept form.
Then Graph the equation.
The problem is y=x+2
How would you solve this?
Would you possibly subtract 2
or would you cover up the y and then
x equals 2( we learned a shortcut on that part but
i wasnt sure if i should do that)
Click here to see answer by checkley75(3666) |
Question 103190: This is about graphing lines.
You have to find the x intercept form and the y intercept form.
Then Graph the equation.
The problem is y=x+2
How would you solve this?
Would you possibly subtract 2
or would you cover up the y and then
x equals 2( we learned a shortcut on that part but
i wasnt sure if i should do that)
Click here to see answer by edjones(8007)  |
Question 103413: I have the following problem. I will be honest, it is for homework, so the answer is not in the back of the book. I am just trying to understand how to properly solve it.
y = (x^2 - 4)/2x^4
I tried to simplify this on the website and it gave me y - (x^2 - 4)/2x^4 = 0
I am suppose to state what the intercept is and what it is symmetric to (y-axis, x-axis and/or origin)
Here is what I did.
y = (x^2 - 4)/2x^4
y = (x^2 - 4)/(x^2)(2x^2) - I broke apart the 2x^4
y = -4/2x^2 - I thought the x^2 on the bottom of the fraction cancelled out the top.
After that, I did not know what else to do. I could multiply both sides by 2x^2, but that did not seem to get me anywhere, so I started by making a list of the possible values of x and y.
Here is what I came up with.
x = 2, y = -1/2
x = -2, y = -1/2
x = 1, y = -2
I plotted these and my answer was the following:
1. I could not find an intercept. I don't see where either can equal 0, unless they both equal 0.
2. They would be symmetric to the y-axis.
Am I correct? My main goal is to find out what else to do with the equation. I'm lost.
Thanks for your help in advance.
Click here to see answer by stanbon(75887) |
Question 103413: I have the following problem. I will be honest, it is for homework, so the answer is not in the back of the book. I am just trying to understand how to properly solve it.
y = (x^2 - 4)/2x^4
I tried to simplify this on the website and it gave me y - (x^2 - 4)/2x^4 = 0
I am suppose to state what the intercept is and what it is symmetric to (y-axis, x-axis and/or origin)
Here is what I did.
y = (x^2 - 4)/2x^4
y = (x^2 - 4)/(x^2)(2x^2) - I broke apart the 2x^4
y = -4/2x^2 - I thought the x^2 on the bottom of the fraction cancelled out the top.
After that, I did not know what else to do. I could multiply both sides by 2x^2, but that did not seem to get me anywhere, so I started by making a list of the possible values of x and y.
Here is what I came up with.
x = 2, y = -1/2
x = -2, y = -1/2
x = 1, y = -2
I plotted these and my answer was the following:
1. I could not find an intercept. I don't see where either can equal 0, unless they both equal 0.
2. They would be symmetric to the y-axis.
Am I correct? My main goal is to find out what else to do with the equation. I'm lost.
Thanks for your help in advance.
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 103413: I have the following problem. I will be honest, it is for homework, so the answer is not in the back of the book. I am just trying to understand how to properly solve it.
y = (x^2 - 4)/2x^4
I tried to simplify this on the website and it gave me y - (x^2 - 4)/2x^4 = 0
I am suppose to state what the intercept is and what it is symmetric to (y-axis, x-axis and/or origin)
Here is what I did.
y = (x^2 - 4)/2x^4
y = (x^2 - 4)/(x^2)(2x^2) - I broke apart the 2x^4
y = -4/2x^2 - I thought the x^2 on the bottom of the fraction cancelled out the top.
After that, I did not know what else to do. I could multiply both sides by 2x^2, but that did not seem to get me anywhere, so I started by making a list of the possible values of x and y.
Here is what I came up with.
x = 2, y = -1/2
x = -2, y = -1/2
x = 1, y = -2
I plotted these and my answer was the following:
1. I could not find an intercept. I don't see where either can equal 0, unless they both equal 0.
2. They would be symmetric to the y-axis.
Am I correct? My main goal is to find out what else to do with the equation. I'm lost.
Thanks for your help in advance.
Click here to see answer by Fombitz(32388)  |
Question 103442: please tell me if this is right because i'm not really sure
-4=2-2x
this is what i did
-4=2-2x
-4=2=6
subtract 2 from both sides
2-2cancels each other out
then got 6=-2x
then i divided each side by 2
and got the answer 3=x
Click here to see answer by doukungfoo(195)  |
Question 103601: What does my teacher mean when she says "Tell how each of the following may be graphed by "shifting" the graph of y=/x/. Then sketch the graph for each."
y = /x + 2/ - 1
y = /x - 3/ - 2
y = /x - 1/ + 2
y = -/x + 2/ + 1
Click here to see answer by stanbon(75887) |
Question 103676: Graph each system of equations using the coordinate plane provided. Then determine whether the system has one solution, no solution or infinitely many solutions. If the system has one solution, name it.
x+3y=3
y=-1/3x+3
Click here to see answer by stanbon(75887) |
Question 103675: Graph each system of equations using the coordinate plane provided. Then determine whether the system has one solution, no solution or infinitely many solutions. If the system has one solution, name it.
y=3x
y+x-4=0
Click here to see answer by elima(1433) |
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