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

Tutors Answer Your Questions about Graphs (FREE)

Question 257332: graph of 2x + y = -4 ?
Click here to see answer by Fombitz(32388)

Question 257338: Find an equation of the line having the given slope of -2 and given points (6,8)
Click here to see answer by dabanfield(803)

Question 257387: How do you find the equation of a line using the information "it passes through (3,-1) and (5,3)?
Click here to see answer by drk(1908)

Question 257387: How do you find the equation of a line using the information "it passes through (3,-1) and (5,3)?
Click here to see answer by palanisamy(496)

Question 257388: how do determine the equation of a line using the information "the slope is -3 and it passes through (2,-1)
thank you
Click here to see answer by palanisamy(496)

Question 257483: I did this linear equation problem, but I want to make sure it is right.
Graph a line using the "friendly numbers" -2, -1, 0, 1, 2
1. y = 2x + 3 This is the answer I put down:
x / 2x+3 / y / (x,y)
-2 / 2(-2)+3 / -1 / (-2,-1)
-1 / 2(-1)+3 / 1 / (-1,1)
0 / 2(0)+3 / 3 / (0,3)
1 / 2(1)+3 / 5 / (1,5)
2 / 2(2)+3 / 7 / (2,7)
I didn't know how to make columns on the computer for my answers. The
above should be in columns, but I put slashes to indicate the columns. Now I am thinking about the answer because it states to a graph a line using the friendly numbers. Are my columns enough or do I have to graph a line?
Click here to see answer by drk(1908)

Question 257484: I did this linear equation problem, but I want to make sure it is right.
Graph a line using the "friendly numbers" -2, -1, 0, 1, 2
1. y = 2x + 3 This is the answer I put down:
x / 2x+3 / y / (x,y)
-2 / 2(-2)+3 / -1 / (-2,-1)
-1 / 2(-1)+3 / 1 / (-1,1)
0 / 2(0)+3 / 3 / (0,3)
1 / 2(1)+3 / 5 / (1,5)
2 / 2(2)+3 / 7 / (2,7)
I didn't know how to make columns on the computer for my answers. The
above should be in columns, but I put slashes to indicate the columns. Now I am thinking about the answer because it states to a graph a line using the friendly numbers. Are my columns enough or do I have to graph a line?
Click here to see answer by stanbon(75887)

Question 257560: 5x+5y=7 and 7x-3=13 how do i solve using elimination method?
Click here to see answer by Alan3354(69443)

Question 257560: 5x+5y=7 and 7x-3=13 how do i solve using elimination method?
Click here to see answer by palanisamy(496)

Question 257693: Find the caterer's fixed cost and the cost per student served if the cost for 100 students will be 750 and the cost for 150 students will be 1050
Click here to see answer by richwmiller(17219)

Question 257733: in direct variation if y varies directly with x:
find the equation for the direct variation if y=20 when x= 3 find x when y=8
Click here to see answer by drk(1908)

Question 257736: Lorena borrowed $100 from her father and plans to pay him back at a rate of $10 per week. The graph shows the amount Lorena owes her father. Find the equation that represents this relationship.
A. y= 10x - 100
B. y= 10x - 90
C. y= 100 - 10x
D. y= -100 - 10x
Click here to see answer by drk(1908)

Question 257801: What is the slope of y= -10x +6
Click here to see answer by drk(1908)

Question 257802: find the intercerpts and then use them to graph the equation 3y - 9 = 3x
Click here to see answer by drk(1908)

Question 257666: Find the variation constant, and write a formula that expresses the indicated variation. C varies inversely as d and c=5 when d= 2.
Click here to see answer by ankor@dixie-net.com(22740)

Question 257956: Solve the equations by substitution.
x - y = 6
x = y + 2
x = ?
y = ?

Click here to see answer by richwmiller(17219)

Question 257959: Solve the equations by substitution.
5x - 6 = y
2x - 3y = 4
x = ?
y = ?

Click here to see answer by checkley77(12844)

Question 257981: Trying to help the children with homework. Cartesian Coordinate System. If I can see one problem finished I maybe able to understand.
Directions: Slope form both points
2nd point slope form and verify
Write in standard form
Label and intercept
1. (4,7) (8,3)

Click here to see answer by richwmiller(17219)

Question 258049: |-5p| > 20
Click here to see answer by drk(1908)

Question 258059: please help me find the answer to this question.
find the slope between the points (-2,-5) and (3,5)
thank you
Click here to see answer by stanbon(75887)

Question 258043: Solve and graph (on a number line) the solution set: 3x^3+4x^2-15x<0
Click here to see answer by jsmallt9(3758)

Question 258066: Please help me . find the slope between the points (-2,-5) and (3,5) please show all your work therefore i can understand how you got the answer. thank you for your time
Click here to see answer by richwmiller(17219)

Question 258081: Can you PLEASE HELP ME Find the equation of a line parallel to the line y=2x+4 that passes through the point (1,3. write the equation of the line in slope - intercept form : y=mx+b. Im having a hard time understanding this problem. Im not that great at math so if you could help me with this step by step so i can get the bet understanding of this. i would really appreciate it more than anything.
Click here to see answer by scott8148(6628)

Question 258095: How do I graph the equation 2x-y=0 y=2x ?
Click here to see answer by richwmiller(17219)

Question 258098: Determine which of the ordered pairs does NOT lie on the graph of the function
f(x)= - 2x + 5
A. (1,3)
B. (5, -5)
C. (4, -3)
D. (0,4)
Please solve & explain this so I can solve the other 14 answers.
Thank you
Dawn

Click here to see answer by scott8148(6628)

Question 257980: 7x - 2 = 2y
3x = 2y - 1
x = ?
y = ?

Click here to see answer by checkley77(12844)

Question 257979:
Solve the equations by substitution.
x - y = 6
x = y + 2
x = ?
y = ?

Click here to see answer by checkley77(12844)

Question 258159: Graph the inequality y is less than 2x + 2
Graph the inequality 2x is less than 3y + 6
Click here to see answer by stanbon(75887)

Question 258148: 4) Use the graph of y = 7 � 6x � x2 to answer the following:

a) Without solving the equation (or factoring), determine the solutions to the equation 7 � 6x � x2 = 0 using only the graph.

Answer:
Explain how you obtain your answer(s) by looking at the graph:
b) Does this function have a maximum or a minimum?
Answer:
Explain how you obtain your answer by looking at the graph:

c) What is the equation of the line (axis) of symmetry for this graph?
Answer:

d) What are the coordinates of the vertex in (x, y) form?
Answer:

Click here to see answer by Earlsdon(6294)

Question 258157: Solve the equations by substitution.
8x = 2y + 5
3x = y + 7
x = ?
y = ?

Click here to see answer by checkley77(12844)

Question 258157: Solve the equations by substitution.
8x = 2y + 5
3x = y + 7
x = ?
y = ?

Click here to see answer by palanisamy(496)

Question 254678: how do you graph y=4x^2-x+1?
Click here to see answer by Alan3354(69443)

Question 258239: At least 150 coupon books are sold. Ezra sold at most two times as many as Tava plus 30. Show all possible solutions.
Click here to see answer by richwmiller(17219)

Question 258223: For the line given by the following equation, find the equation of the line that is perpendicular to it and passes through the origin.

y=2x+3

Click here to see answer by richwmiller(17219)

Question 258213: write the standard form of the equation of the line that is perpendicular to the graph of the given equation and passes through the point with the given coordinates.
x=-8; (4,-6)
Click here to see answer by richwmiller(17219)

Question 258324: Find the y-intercept of 3x-y=-15
Click here to see answer by palanisamy(496)

Question 258203: Graph the folowing inequalities y>-2x-1
Click here to see answer by Fombitz(32388)

Question 258254: Graph the inequality 0 > 9+6x-9y
Click here to see answer by drk(1908)

Question 258384: Solve the equations by substitution.
7 + 2y = 8x
3x - 2y = 0
x = ?
y = ?

Click here to see answer by checkley77(12844)

Question 258546: Given y= 1/(1-x) - 2
What are the two asymptotes( i think they are y=-2 and x=1) ?
What is the domain and range of this equation? ( D= all real number except for 0, what's the range?)
Thanks
Click here to see answer by drk(1908)

Question 258551: Solve the equations by substitution.
8y - 1 = x
3x = 2y
x = ?
y = ?
Click here to see answer by dabanfield(803)

Question 258840: how to graph f(7) on graph?
Click here to see answer by Fombitz(32388)

Question 258843: how do i graph y<0?

Click here to see answer by CharlesG2(834)

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