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

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Question 352383: Find the slope for (-10, -11) and (-16, -20)
I know that y2 - y1/x2 - x1
so I have -10 - (-11)/-16 - (-20)
This is where I get messed up!! Is -10 - (-11) positive 21? and -16 - (-20) a positive 36? This confuses me. I know that the figure will turn positive, but not sure then if these would be added or what.
Thank you for your help!
Click here to see answer by edjones(8007)

Question 352436: I need help with my Final Math Exam for Mat/116. It is algebra 1A. The final exam focuses on real numbers, algebraic expressions, inequalities, graphing linear equations, function, system of equations, and system of inequalities. Can anyone please help me? I can post screen shots of my questions into a word document. The final is due on Sunday October 11 2010. Thanks.
Click here to see answer by mananth(16946)

Question 352490: Solving for the lonely "y" What is 3x - 9y = -15

Click here to see answer by jim_thompson5910(35256)

Question 352478: please help me solve this. 8(2x-1)<4(2x-4) there is a line under the negative sign. also need to no the Interval Notation
Click here to see answer by jim_thompson5910(35256)

Question 352495: Hello, did I find the x and y intercepts of the equation properly?

x=0

y intercept: (0,)
y=0

x intercept: (, 0)
If I did this correctly, do I leave the in the x intercept coordinates or do I convert this to decimal form, 1.41?
Thanks and have a great night!
Click here to see answer by jim_thompson5910(35256)

Question 352605: Solve using add and multipication:
7 + 6x < 37
I did -7 to both sides. Which gave me: 6x < 30
is the correct solution x/x > 5
Click here to see answer by stanbon(75887)

Question 352606: Find the slope of the line:
(-3, -2) (5, -2)
y2-y1 = -2 - (-2)
x2-x1 = -3 - 5
Is correct answer 0?
Click here to see answer by stanbon(75887)

Question 352606: Find the slope of the line:
(-3, -2) (5, -2)
y2-y1 = -2 - (-2)
x2-x1 = -3 - 5
Is correct answer 0?
Click here to see answer by Fombitz(32388)

Question 352609: Graph & find the y intercept:
y = 3/2x + 6
The +6 is throwing me off for some reason.
Thank you for all of your help!!!
Click here to see answer by Fombitz(32388)

Question 352688: Please show me how to graph 8x+3Y>24
I know 8x+3y=24
Subtract 8x from both sides; 3y=8x-24
Divide both sides by 3; y = 8/3x - 8
Is that correct?
If so,how do I put it on the graph? What are the points? Where do I draw the line?
If it's not correct, what is the correct way?
Thank you!
Jill
Click here to see answer by Fombitz(32388)

Question 352788: I can't seem to figure out the answer to this question...can you help?
"Any line parallel to 4y-x=8 must have a slope equal to________"
thank you
Click here to see answer by jim_thompson5910(35256)

Question 352791: Are the inequalities x > -8 and �x < 8 equivalent?
Click here to see answer by jim_thompson5910(35256)

Question 352953: please help.....
find an equation of a line perpendicular to y=3/2x+5 and contains the point(0,0)
please show me step by step
thank you
april
Click here to see answer by jim_thompson5910(35256)

Question 352899: Graph the system of inequalities. Find the coordinates of any vertices formed.
1)6x-2y is less than or equal to 12
2)y-3 is less than or equal to 0
3)x+y is greater than or equal to 0
I understand how to graph 1) and 2) but not 3). I understand solid VS shaded lines and what part of the boundries get shaded. I can see with graphing 1) and 2) that they intersect at (3,3).
I do not understand at all how to obtain the vertices. The book says to use graphing, substitution, or elimination.
I appreciate your advice!
Jill

Click here to see answer by scott8148(6628)

Question 352995: How would you graph x<9? Would it be a vertical line ?
Click here to see answer by Alan3354(69443)

Question 352974: How do you solve 4y = 3x + 12. It is for graphing.
Click here to see answer by Alan3354(69443)

Question 353030: How can I turn this problem into an inequality problem? It's about assembling radios called "Breakers" and "Good Buddies"
"An assembly line can spend a total of no more than 189 man-hours a day assembling radios. It takes 7 man-hours to assemble a Breaker and 3 man hours to assemble a Good Buddy."
Click here to see answer by stanbon(75887)

Question 353080: solve:
(2x-1)^1/3 -3=0
x=?

Click here to see answer by robertb(5830)

Question 353079: The point (1,2) has a distance _______ from the line defined by
Y= -X/3+1
(I think its the -x/3 fraction that messes me up)
Click here to see answer by mananth(16946)

Question 353104: graph the inequality. I know how to get the points to graph I'm just not sure how to graph a fraction if you could please show me that. I came up with points
(3/2,0) (0,2)
please help
thank you
Click here to see answer by Fombitz(32388)

Question 353034: The equation of the line in slope-intercept for is y=
3x+2y=6
8x+12y=0
Click here to see answer by Fombitz(32388)

Question 353103: graph the system of linear inequalities x<3;2x+y>7
please show me how you get the points
to graph theres suppose to be a line under the < by the 3 so = to
thank u
Click here to see answer by josmiceli(19441)

Question 353122: Graph the system of linear inequalities: x,<3; 2x+y>7
there is suppose to be a -under the < sign by the 3
please explain to me how you get the points to graph
thank you
april
Click here to see answer by ewatrrr(24785)

Question 353163: graph the inequality on a plane
3x+4y greater or equal to 12
Click here to see answer by ewatrrr(24785)

Question 353178: graph the inequality on a plane 3x+4yless than or equal to 12
Click here to see answer by Fombitz(32388)

Question 353286: My problem is.
Ms.Makel is planning a breakfast meeting for 45 people. She wants at least one donut per person, but donuts are only sold in boxes of a dozen. What is the least number of boxes she should buy? I need help write and solve the problem.
Please and Thank You!!!!!!!!!!!
Click here to see answer by rfer(16322)

Question 353524: How do I graph 5x + y - 2 = 0?
I also need the slope and y-intercept.
Click here to see answer by mananth(16946)

Question 353547: a parallel line to y=2\5x-5 passing through (0,-3)

Click here to see answer by mananth(16946)

Question 353593: 2x+y=-8
Click here to see answer by Fombitz(32388)

Question 352799: How do you find the equation of the line that passes through (-3,10) and (-1,18) in point slope form?
Click here to see answer by sofiyac(983)

Question 353631: how do i draw the line with the given slope and y-intercept of m=1,b=1
Click here to see answer by sofiyac(983)

Question 353634: in slope-intercept form with graphing the equation how will you slove y=5x-5/2
Click here to see answer by sofiyac(983)

Question 353633: y=(4/5)x-1
Click here to see answer by sofiyac(983)

Question 353632: How do I draw the line with the given slope and y-intercept of m=-3/7,b=14
Click here to see answer by sofiyac(983)

Question 353170: Graph the system
y is less or equal -5
x is less or equal 6
I am not sure how to graph this can someone help?
Click here to see answer by Fombitz(32388)

Question 353655: I have to find the slope of the line containing the two points:
(3,-2) (1,4)
I have completed the following:
m= 4-(-2)= 2
1-3 =-2
My question is do I add or multiply 4-(-2) then subtract the -2?
Click here to see answer by Fombitz(32388)

Question 353768: Please help me with this!...I do not understand how to get the other answers without using the letters that I am not allowed to use. I get all confused starting with the 4th question.

If you were to compute frequently the distance of a point from a line it would be handy to have a formula into which you plug the coordinates of the point and the equation of the line. At the end of this problem you will obtain such a formula. To help you along you can use WeBWorK to check your intermediate answers.
Let P be the point (p,q) and L the line y = m x + b. It is not necessary, but if you like you may assume that P lies below the line L. All your answers below should be algebraic expressions in terms of m, b, p and q. The slope of L is ____. The slope of a line perpendicular to L is ____. The line through P perpendicular to L can be written as y = s x + c where s is:___ and c is:___ . That line intersects L in the point Q = (u,v), where u is:___ and v is:___. The distance of P and Q is ____. The expression you enter here may be quite messy. However, if it is correct it can be simplified into a very concise and meaningful form. Make sure you check the solution of this problem when the set closes.
Hint: If you are bewildered by all the symbols ask yourself what they mean in the special case of the preceding problem, and compare your calculations for this problem with the numerical calculations you did earlier.
So here are the answers that I have so far.
1. m
2. -1/m
3. -1/m
4. ?
5. ?
6. ?
7. ?
Click here to see answer by stanbon(75887)

Question 353848: Determine the equation of the line containing the points (0, 32) & (100, 212).... Write the equation in "y = mx + b" form..... also write equation in "Ax + By = C" form
Click here to see answer by Alan3354(69443)

Question 353991: What would be the slope for (3,4) and (-2,1)

Click here to see answer by jim_thompson5910(35256)

Question 353991: What would be the slope for (3,4) and (-2,1)

Click here to see answer by rfer(16322)

Question 354025: find an equation of the line containing the given pair of points. Express your answer in the form x = a, y =b or y = mx +b
(-6,-6) & (9,9)
What is the equation of the line?
y= ____ (fraction or integer)

Click here to see answer by Alan3354(69443)

Question 354146: How do you graph 9x+y=5
Click here to see answer by ewatrrr(24785)

Question 354170: Solve and graph the following:
a+2 less than or equal -10.
Graph the sloution.
Click here to see answer by christydawn12(1)

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