Questions on Algebra: Coordinate systems, graph plotting, etc answered by real tutors!

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Question 69430: plotting ordered pairs so that each is a solution for the given equation:
This is my problem 3x+4y=12 (0, ) ( ,3/4) ( ,0) (8/3, ) I have spent about 4 hours working on this. I tried solving for both x and y then plugging the number in. That didnt work out. I have tried graphing it to see if I could make more sense out of it that way, and that didnt help me much, and I believe it confused me worse. PLease Help!!
Click here to see answer by tutorcecilia(2152)

Question 69499: Find the constant variation of K.
m varies directly with n; m=144 when n=8.
Totally lost!
Click here to see answer by josmiceli(9671)

Question 70059: I wanted to know how you graph a linear system.
thanks
Click here to see answer by rapaljer(4667)

Question 70090: y=39-6x
x+3y=15
What are the coordinates on a graph for these equations?
Click here to see answer by stanbon(57307)

Question 70223: Please help me with this question
The line 3x + y = 15 intersects the axes at A and B.
Find:
(i) the coordinates of A and of B
(ii) the distance AB
Click here to see answer by stanbon(57307)

Question 70222: Please help me solve this question.
Find the equation of the line joining A(-1, -9)to B(6, 12)
Another line passes through C(7, -5) and meets AB at right angle at D. Find the equation of CD and calculate the coordinates of D.
Click here to see answer by jim_thompson5910(28593)

Question 70218: Please help me with this question.
X 1 3 6
Y 3 9 t
The table above shows a relation of the form y = kx` + c where k and c are constants.
calculate the value of t.
Click here to see answer by ankor@dixie-net.com(15649)

Question 70409: Can please explain the problem...instruction...graph x + y = -2
Click here to see answer by checkley75(3666)

Question 70625: Can you please help on this problem, rather complicated...instructions..write the equation of the line passing through (5,5) and (4,5).
Click here to see answer by bucky(2189)

Question 70624: Can you please explain the problem...instructions..solve and graph the solution set...x + 16 > 10.
Click here to see answer by bucky(2189)

Question 70828: (4,-3) and (2,-7) are endpoints of a segment. Find the midpoint of the segment and graph the segment placing the three points on the graph.
Click here to see answer by stanbon(57307)

Question 70829: (-8,10) and (-4,-2) are endpoints of a segment. Find the midpoint of the segment and graph the segment placing the three points on the graph.
Click here to see answer by jim_thompson5910(28593)

Question 70827: Please help
(-2,6) and (6,4) are endpoints of a segment. Find the midpoint of the segment.
Click here to see answer by jim_thompson5910(28593)

Question 71220: To reach a vacation spot, the Jones family first traveled by plane and then drove the remaining distance in a rented car.
The distance by car was 125 Kilometers less than the distance by plane. The total distance was 500 kilometers less than three times the distance traveled by car, find the distance flown in the airplane.
HELP!!
Dorothy
Click here to see answer by stanbon(57307)

Question 71219: A worker tearing down a barn, uses a pinch bar 4 ft. long with the shorter end 2in. from the fulcrum. If the worker can excert a force of 150 lbs. at one end of the pinch bar, how great a force can he excert at the other end? (Note the differences in units, 2 in. and 4 ft. Units must be the same when using the lever formula.)
w1 d1 = w2d2
I'm lost after this. Can you help?
Dorothy
Click here to see answer by checkley75(3666)

Question 71230: solve for y: 2x + 4y > 2y + 6x
Click here to see answer by bucky(2189)

Question 71229: i need to find the slope of a parallel line through (-2,3) and (-7,5)
Click here to see answer by checkley75(3666)

Question 71228: i need to find the slope of a perpendicular line through (5,-4) and (4,2)
Click here to see answer by checkley75(3666)

Question 71832: Find the distance between the points A(4,-3) and B(-4,3).
Help!
Click here to see answer by bucky(2189)

Question 71925: If points A,B and C lie on a coordinate line and points A and B have coordinates of 15 and 7 respectively, then which of the possible coordinates for point C satisfy(ies) d(A,C)< d(B,C)?
Click here to see answer by Edwin McCravy(8908)

Question 72244: graph each system of equations. then determine whether the system of equations has one solution, no solution, or infinitely many solutions. if the system has one solution name it.
x-y=9
x+y=11
Click here to see answer by rmromero(383)

Question 72553: Suppose you travel north for 35 kilometers then travel east 65 kilometers. How far are you from your starting point? North and east can be considered the directions of the y- and x-axis respectively. Round to the tenth's place.
Answer:
Show work in this space.

Click here to see answer by checkley75(3666)

Question 72685: transform 2x-5y=15 into a slope intercept form
Click here to see answer by checkley75(3666)

Question 72712: Help??? I attempted this one and got an answer of 3. Please walk me through this one.
Find the solution to the equation: 6x - 3 = -2x + 21
Click here to see answer by ankor@dixie-net.com(15649)

Question 72711: Thanks for you assistance in the past. I need some help with the below equation.
Find the solutions to the equation: x - 5/x = 4
Click here to see answer by stanbon(57307)

Question 72708: need to find 3 points that satisfy this function f(x) = |x-3| -4
Click here to see answer by bucky(2189)

Question 72890: ( 2, 1 ) ; (5,3)
Click here to see answer by tulioalvarenga89(4)

Question 72840: Suppose you see the two summer jobs advertised at the right. Let x= the amount of sales and y= money earned in a week.
cellular phone sales: y=150+0.2x
stereo sales: y=200+0.1x
A- To earn the same amount of money at both jobs, how much will you need to sell in a week?
B- After talking with salespeople, you estimate weekly sales of about $600 with either job. At which job will you earn more money?
ON THE SIDE OF THE PAGE IT SAYS:
salesperson wanted
knowledge of cellular phones
on-site sales
$150/week + 20% commision
UNDERNEATH THAT IT SAYS:
sell stereo equipment in National Electronics Retail Chain!
$200/week + 10% commision
Click here to see answer by stanbon(57307)

Question 73738: Y= -1/3X+1
Y= 1/3X-3
The unit in the text book that my class and I are on is Solving systems: Substitution
Click here to see answer by jim_thompson5910(28593)

Question 73737: Y= -1/3X+1
Y= 1/3X-3
Click here to see answer by checkley75(3666)

Question 73737: Y= -1/3X+1
Y= 1/3X-3
Click here to see answer by bucky(2189)

Question 73780: 2c^+20c+32=0
Click here to see answer by checkley75(3666)

Question 73787: find the distance.... If point A, B, C lie on a coordinate line and points A and B ave coordinates 15 and 7 respectfully, then which of the possible coordinates for point c satifies d(A,C) possible answers:
12
17
both
neither
Click here to see answer by checkley75(3666)

Question 74139: Find the distance between each pair of points.
(-3, 0) and (4, 0)
There is not much information in the book about finding the distance between points and need some help. Thanks
Click here to see answer by rmromero(383)

Question 74571: What is the equation in slope intercept form of the line that goes through the coordinates of (-4,6) (8,12)?
Click here to see answer by Edwin McCravy(8908)

Question 75534: I'm not sure if this is the right category for my problem, but I tried. my problem is y=-3x+6x-1, and you have to create an x and y table.
Click here to see answer by bucky(2189)

Question 75694: If the rise of a roof is 7.5 over a horizontal distance of 12.27ft what is the slope of the roof to the nearest hundred?
Click here to see answer by jim_thompson5910(28593)

Question 75692: What is the slope and y- intercept
x = -9
Click here to see answer by jim_thompson5910(28593)

Question 76187: What would the equation be if the slope is -3/4 and the y intercept is (0,8)?
Click here to see answer by checkley75(3666)

Question 76185: What would the equation be if the slope is -2 and the y intercept is (0,4)?
Click here to see answer by jim_thompson5910(28593)

Question 76186: What would the equation be if the slope is 5 and the y intercept is (0,-2)?
Click here to see answer by bucky(2189)

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