Tutors Answer Your Questions about Graphs (FREE)
Question 50314: Chapter 1 Systems of linear Equations
-Solve each of the linear systems of equations graphically. use a mini table of values to draw the graph of the lines.
x+y=2
3x=2y=9
so how would you graph both of these on one graph? and would you use the equation
Y= mx=b?
Click here to see answer by tutorcecilia(2152)   |
Question 50458: I tried the following problem and came up with a different answer than the textbook.
x^2+4x+4>9
x^2+4x-5>0
(x+5)(x-1)>0
x+5>0, x-1>0
x>-5, x>1
The book has the answer to be x<-5 and x>1. I checked my work a few times and I still can't find what I did wrong. Please help me find my error. Thank you in advance.
Click here to see answer by stanbon(75887) |
Question 50482: The graph is as follows:
x axis left to right is -4 ,-2, 0, 2, 4
y axis bottom to top is the same as the x axis.
There is an angular line from -4 x axis to -4 y axis
The question reads: The graph represents which inequality?
Click here to see answer by AnlytcPhil(1806)  |
Question 50500: Ok, is there another way to solve the values for x and y instead of just inserting a zero into each to get the value of the other?
2y = x - 8
If I divide each side by 2, should I get y = 1/2x - 8 or y = x - 4??
Where am I going wrong?
Rebecca
Click here to see answer by tutorcecilia(2152) |
Question 50503: How does replacing f(x) by f(x) + 4 in y = f(x) affect the graph of y = f(x) ?
a. The graph is shifted four units upward.
b. The graph is shifted four units downward.
c. The graph is shifted four units to the right.
d. The graph is shifted four units to the left.
e. The graph is expanded vertically.
f. The graph is contracted vertically.
g. none of these describes the transfromation given
Click here to see answer by Nate(3500) |
Question 50594: Graph inequalities on a number line:
|3x+5|>-11
This is what I did:
3x+5<11 3x+5>-11
3x+5-5<11-5 3x+5-5>-11-5
3/3x<6/3 3/3x>-16/3
x<2 x>-16/3 or -5 1/3
Then I placed a hollow point on -5 1/3 and a hollow point on 2 and shaded the line in between. Am I correct, or just way off?
Click here to see answer by stanbon(75887) |
Question 50584: In most businesses, increasing prices of their product can have a negative effect on the number of customers of the business. A bus company in a small town has an average a number of riders of 1,000 per day. The bus company charges $2.00 for a ride. They conducted a survey of their customers and found that they will lose approximately 50 customers per day for each $.25 increase in fare. Given the description above, graph the function, identify the graph of the function (line, parabola, hyperbola, or exponential), explain your choice, and give the domain and range as shown in the graph you have drawn, and also the domain and range of the entire function excluding unrealistic values. The vertical axis is the number of riders per day and the horizontal axis is the fare.
Click here to see answer by stanbon(75887) |
Question 50652: Dear Tutor,
Please help me with this problem..thanks!
Why is 2y+7x=-3 considered a line? We were asked in multiple choice form, and I figured this equation was a line by process of elimination but I would like to know why.
Thank You,
student in need
Click here to see answer by rapaljer(4671)  |
Question 50742: HEY!
I have this problem that I can not figure out!
"The coordinates of rectangle ABCD are A(0,2), B(4,8), C(7,6) and D(3,0). Show that the diagonals are equal in length." I tried to solve this by drawing it out on graph paper but I do not know how to show that the diagonals are equal in length.
Thank you if you can help,
Student in need
Click here to see answer by Nate(3500) |
Question 50740: Hello,
I was wondering how you write the equation of a line that is drawn on a graph. I think you would use y=mx+b, but I am not sure how you would plug the numbers in. The problem just shows a graph with a diagonal line and the y intercept is 0,2. The x intercept is 2,0. I know this question may sound confusing because I can't draw the graph but if you could help that would be great!
Thanks
Click here to see answer by stanbon(75887) |
Question 50755: Determine whether the relation is a function. If it is a function, state its domain and range.
{(–2, 3), (0, 10), (1, 3), (4, 8)}
a. Domain: {3, 10, 8}; Range: {–2, 0, 1, 4}
b. Domain: {–2, 0, 1, 4}; Range: {3, 10, 8}
c. Domain: {–2, 0, 1, 4}; Range: 7
d. The relation is not a function.
Click here to see answer by stanbon(75887) |
Question 50756: Determine whether the set T= {( –2, –8), (–1, –1), (0, 0), (–1, 1), (–2, 8)} defines a function. If it does, then state the domain and range.
a. T does not define a function.
b. T defines a function with domain { –2, –1, 0} and range { –8, –1, 0, 1, 8}.
c. T defines a function with domain { –8, –1, 0, 1, 8} and range { –2, –1, 0}.
d. T defines a function with domain {( –2, –8), (–1, –1), (0, 0), (–1, 1), (–2, 8)} and range { –2, –1, 0}.
Click here to see answer by stanbon(75887) |
Question 50819: How does replacing f(x) by f(x) + 4 in y = f(x) affect the graph of y = f(x) ?
a. The graph is shifted four units upward.
b. The graph is shifted four units downward.
c. The graph is shifted four units to the right.
d. The graph is shifted four units to the left.
e. The graph is expanded vertically.
f. The graph is contracted vertically.
g. none of these describes the transfromation given.
Click here to see answer by stanbon(75887) |
Question 50963: Determine whether the set T= {( –2, –8), (–1, –1), (0, 0), (–1, 1), (–2, 8)} defines a function. If it does, then state the domain and range.
a. T does not define a function.
b. T defines a function with domain { –2, –1, 0} and range { –8, –1, 0, 1, 8}.
c. T defines a function with domain { –8, –1, 0, 1, 8} and range { –2, –1, 0}.
d. T defines a function with domain {( –2, –8), (–1, –1), (0, 0), (–1, 1), (–2, 8)} and range { –2, –1, 0}.
Click here to see answer by stanbon(75887) |
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