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

Tutors Answer Your Questions about Graphs (FREE)

Question 83001: Draw the graph of 2x^2-y=8 Where does the graph intersect the x axis?
Click here to see answer by Mona27(45)

Question 83000: How do I find the slope of a line passing through the points (1,1) and (3,3)?
Click here to see answer by jim_thompson5910(35256)

Question 82957: Can someone please, please show me how to do this?
Write the equation of the line which passes through the point (2, 1) and is parallel to the line with equation y=5/2 x+6

Click here to see answer by jim_thompson5910(35256)

Question 82947: Find the x and y intercepts of y=4x-4.
Click here to see answer by checkley75(3666)

Question 82998: Are the following lines parallel, perpendicular or neither?
L1 with equation x-5y=10
L2 with equation 5x+y=5
Click here to see answer by Mona27(45)

Question 82997: The solution to one of my math problems is x=>10, y=>15. How do I graph these inequalities?
Click here to see answer by Mona27(45)

Question 83024: Solve the system by graphing and showing the steps of the work.
x � 2y = 8
x + y = �1
Click here to see answer by jim_thompson5910(35256)

Question 83023: 2x+y=5
2y=10-4x
Click here to see answer by ryanman(19)

Question 83046: How do I find the solution set of x>7? Please help me with this, Thank You.
Click here to see answer by jim_thompson5910(35256)

Question 83060: line 1: 3x+2y=12
line 2: 2x+4y=8
Click here to see answer by checkley75(3666)

Question 83027: List the terms of the following expression.
4w + 4
Click here to see answer by checkley75(3666)

Question 83025: A roof rises 2.5 ft over a horizontal distance of 17.86 ft. What is the slope of the roof to the nearest hundredth?
Click here to see answer by checkley75(3666)

Question 83156: Side one of a triangle is 9.
Side two of the triangle is 12
How long is side 3?
thanks
Click here to see answer by Mona27(45)

Question 83167: Which of the folowing are the pair of equations whose graphs are not perpendicular?
A. 2x-8y=9
12x-3y=7
B.3x+6y=8
y=2x-8
C.y=x-7
x+y=3
D. 2y=3x+5
2x+3y=4
Click here to see answer by Mona27(45)

Question 83138: Solve 6x-0.37=5(x-0.28)
The length of one of the equal legs of an isosceles triangle is 8 cm less than 4 times the length of the base. If the perimeter is 29 cm,find the length of one of the equal legs.
solve 2/5x=-10
solve 4x+8=-4.
I appreciate whatever help i can get on these. thank you so much.

Click here to see answer by Mona27(45)

Question 83194: hey guys Im struggling help please
1) An open-top box is to be constructed from a 6 foot by 8 foot rectangular cardboard by cutting out equal squares at each corner and folding up the flaps. Let x denote the length of each side of the square to be cut out.
a) Find the function V that represents the volume of the box in terms of x.
Answer

b) Graph this function and show the graph over the valid range of the variable x..
Show Graph here

c) Using the graph, what is the value of x that will produce the maximum volume?
Answer

Click here to see answer by jim_thompson5910(35256)

Question 82038: Solve the following by graphing:
x-2y=8
3x-2y=12
Click here to see answer by jim_thompson5910(35256)

Question 83140: I'm a bit confused with these problems. I get it somewhat, but for some reason I get lost after the first few variables.
Evaluate function for the value specified.
f(x)=x2-7x+10; find (a)f(0), (b)f(5), and (c)f(-2)
Rewrite equation as a function of x
-3x+4y= 11 ( what i don't understand is how i find out how to rewrite this equation.)
this has to be graphed- f(x)=-2x-5 ( does this get graphed like any other equation, i noticed the function notation and got a little confused)
If f(x) =4x-3 then what does this equate to?
f(-1)
Click here to see answer by bucky(2189)

Question 83298: Can I get a quik hand on these two,
if f(x)=5x-1 then how would i figure out f(a - 2)
If an inventor charges $4 per unit, then her profit for producing and selling x units is given by the function\
P(x)=2.25x-7000
a what is her profit after selling 2,000 units
b profit after 5,000 units
c. what would the break-even point for sales.
thank you ahead of time.
Click here to see answer by stanbon(75887)

Question 83297: I feel a little confused about this problem
x/6 + 3 =9. Am I supposed to divide the six into the x and then add the 3? The answer I was getting was 3, and then I found out that it was wrong and I would like to know where I went wrong.
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An arithmitic student needs an average of 70 to recieve credit. She scored 82,64 and 98 on the first three exams. I am looking for a equality representing the score she must get on the last exam to recieve credit for the course.
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Is 15 a solution to the equation 8-x=7?
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Solve for x, 3x-2y=6.
I forgot how to solve a problem like this one. I just need a refresher so I can get the other ones solved.
Click here to see answer by stanbon(75887)

Question 83336: Find the slope of any line parallel to the line through points (-2,3) and (4,5)
Click here to see answer by jim_thompson5910(35256)

Question 83339: for the quadratic function:
f(x)=3(x+4)^2
state the vertex:( , )
does the parabola open up or down.
the function has ___ real zeros
Click here to see answer by jim_thompson5910(35256)

Question 83363: Please help. I am pulling my hair out over this one as well?
For the equation in exercises 38, create a suitable table of values, and sketch the graph (including the axis of symmetry). Identify the axis of symmetry, identify the vertex point, the graph�s direction, and any axis intercepts gleaned from the table or graph.
y= -x^2+6x-2

Click here to see answer by checkley75(3666)

Question 83349: Please help! and evaluate
b^2-2bc+c^2 if b=3 and c=-2

Click here to see answer by checkley75(3666)

Question 83362: Please help. I am pulling my hair out over this?
For the equation in exercises 26, create a suitable table of values, and sketch the graph (including the axis of symmetry). Identify the axis of symmetry, identify the vertex point, the graph’s direction, and any axis intercepts gleaned from the table or graph.
y=x^2-5x+3

Click here to see answer by scott8148(6628)

Question 83376: Could I have you solve the system by graphing
3x+y=-1
9x+3y=-3
thanks for all of your help
Click here to see answer by stanbon(75887)

Question 83472: I have been trying to solve these equations by graphing them but I'm getting a little lost.
1. a 2x-y=4
b 2x-y=6
2. a x-2y=8
b 3x-2y=12
3. a 3x-6y=9
b x-2y=3
The values for m and b in the following system has to be found so that the solution to the system is (-3,4)
5x+7y=b
mx+y=22

Click here to see answer by checkley75(3666)

Question 83492: Graph y[x]+3. Suggestion is to use five points to see a turn. Please give explanation and show points. Thank you. C. S.
Click here to see answer by rapaljer(4671)

Question 83549: Find the absolute inequality corresponding to x<=-22/3 or x>=11/3.
I have been working on the problem and somehow came up with |x-11/6|>=11/6
I was told that that wasn't exactly correct. I really want to see all the steps so i can learn how to do these problems. I dont have a problem when the numbers are whole numbers, such as x<=12, but im really confused on these fractions. If anyone could show my all the steps and the answer I would greatly appreciate it. Thank you!
Click here to see answer by stanbon(75887)

Question 83677: Graph the quadratic equation and complete a table of values.
y = x^2 + 3x
My answer:
This is what I was given x=-3, x=-2,
and this is where I am so far I have x=-1, x=0, x=1
Now I have to do the table of values for y and then graph this.Please help?

Click here to see answer by stanbon(75887)

Question 83700: I have a few questions.
What would the monthly intrest rate be, for a $1000 dollar credit with a charge of $195 for a month?

Find two consecutive integers such that the sum of 2 times the first integer and 4 times second integer is 46.
Can you explain to me how this should be solved?
-3(10x-3)+10(3x-3)=x-7
convert 9/16 into a percent.

Click here to see answer by stanbon(75887)

Question 83689: how do you find the graph of a system?
Click here to see answer by jim_thompson5910(35256)

Question 83730: if y=one-half x-3 what is the slope

Click here to see answer by lekelly(20)

Question 83725: change the equation,x-y=4 to the form y=mx+b
Click here to see answer by bucky(2189)

Question 83726: Graphing Y=x^2+3x+2
Identify the vertext and the axis of symmetry
Click here to see answer by jim_thompson5910(35256)

Question 83662: I am having trouble finding the answer to the equation and graphing it. In school we have not looked over this yet, (he gives us suprize questions) and i do not know how to answer it.
Y= X over 1 +1
Click here to see answer by tutorcecilia(2152)

Question 83761: I'm trying to remember how to do this problem, we did this soo long ago
Graph y=(x-7)^2+5
Click here to see answer by jim_thompson5910(35256)

Question 83798: Solve, 31x-8(3x-0.745)=6x+0.205
Solve each of the following systems by addition. If a unique solution doesn't exsist, state whether the system is inconsistent or dependent.
1.{ a.2x+3y=1
b.5x+3y=16
2.{ a. x+5y=10
b.-2-10y=-20
thank you so much, and thank you for your time.

Click here to see answer by jim_thompson5910(35256)

Question 83787: HI my homework says to " write the equation of the line in slope-intercept form:
parallel to -5y=10x+32 and through point P(-1,1). Can you clear things up for me? I am completley lost, and there is nothing in my textbook on this, or maybe i am just overlooking it.
Click here to see answer by bucky(2189)

Question 83796: The length of a rectangle is 2cm more than twice its width. If the perimeter of the rectangle is 52 cm, what are the dimensions of the rectangle?
What is the mean of these numbers?
1,6,10,11,12
How does this set get graphed?
3(x-4)>7x-9
The sum of a number and -11 is 4. what is the number?
I would appreciate anybody who can help me out with these. Thank you in advance.
Click here to see answer by Nate(3500)

Question 83829: What is the solution to the system of equations y = 2x and y = -x + 3
Click here to see answer by lekelly(20)

Question 83836: communiting to work. On Monday, Roger drove to work in 45 minutes. On tuesday he averaged 12 miles per hour more, and it took him 9 minutes less to get to work. How far does he travel to work?
Click here to see answer by ankor@dixie-net.com(22740)

Question 83867: What is the vertex and axis of symmetry of the equation y=-2x^2+x+1?
So far I have x=-1+or-sqrt1^2+4(-2)*1/2(-2) and have found the x intercepts to be (-1/2,1).
Click here to see answer by jim_thompson5910(35256)

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