Questions on Algebra: Linear Equations, Graphs, Slope answered by real tutors!

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Question 272097: Tyler has 2 saving accounts. The 2 accounts pay 10% and 12% in annual interest; there is $500.00 more in the account that pays 12% than there is in the other account. If the total interest for a year is $214, how much money does he have in each account?
Thank you.
Click here to see answer by scott8148(6628)

Question 272104: Find the constant of variation k if y varies directly with x and y = 400 when x = 2000
Click here to see answer by scott8148(6628)

Question 272138: Find an equation of the line satisfying the conditions given. Express your answer in standard form.
Parallel 3x-y=-5 and passing through (-1,0)
Click here to see answer by scott8148(6628)

Question 272526: y = 3.4x -3
The slope is __________
The y intercept (0,?)
Click here to see answer by dabanfield(803)

Question 272607: find the slope of the line that passes through the points (-9,2) and (1,1). Reduce your answer.

Click here to see answer by rfer(12660)

Question 272649: Please help me...I have to find the slope of the pair (-9,-9) and (7,-9)...I came up with 0/16...what is the slope? Please show me how?...Thank you I look forward to hearing from you.
Click here to see answer by Theo(3464)

Question 272779: I would appreciate your help because I am totally blank on how to help my daughter solve this. Thank you for any help you are able to give.
Cherilyn
find the slope of the given relation defined by 11=2y

Click here to see answer by jim_thompson5910(28595)

Question 272882: 2x+3y=44
Click here to see answer by bobdabuildr(27)

Question 272965: how do you find the slope-intercept of3x+y=0 then find the slope and the y-intercept?
Click here to see answer by checkley77(12569)

Question 273014: Can someone explain the steps to solve for y for graphing for linear equations? I am having trouble with the equation y = -1/2x -4. I can solve for y without any problem with the variables given for x, but for some reason I am not understanding how to solve for x when given the variable for y. For example, I know that y is -1 and that the answer is -6, but I cannot seem to get the correct answer on my own.
Click here to see answer by stanbon(57348)

Question 273142: find the value of C such that each pair of points is 5 units apart
(0,C) (3,1)
Click here to see answer by solver91311(16885)

Question 273184: What is the slope intercept form of the line that passes through the given point with slope m.
Through (3,-3), m=2
Click here to see answer by checkley77(12569)

Question 273200: solve the system of equations by graphing
5x-4y=8
5x=4y+8
i need two ordered pairs each so i can graph
Click here to see answer by brown.robin72@yahoo.com(1)

Question 273235: Write the equation in slope-intercept form of the line that has a slope of -3 and contains the point (4, -5)
________________________
What I have tried
Given - m = -3
(x,y) - x=4 y=-5
y=m(x)+b
-5 = -3(4)+b
im lost from there on.
Click here to see answer by CharlesG2(828)

Question 273276: How do you know when an equation has infinitely many solutions?
How do you know when an equation has no solution?
Click here to see answer by CharlesG2(828)

Question 273255: write the equation of the line containing P(3,0) and perpendicular to the x-axis
Click here to see answer by jim_thompson5910(28595)

Question 273283: If the slope of a line through (-3,-4k) and (5,8) is -2/3, what is the value of k?
Click here to see answer by JBarnum(2044)

Question 273309: Find an equation of the line containing the given pair of points.
(1,4) and (3,5)
I found m first 5-4/3-1 = 1/2
Then through other sources told me to use this formula
y-y^1=m(x-x^1)
y-4=1/2(x-1)
y-4=1/2x(1/2)(-1/1)
y=1/2x-1/2+4
y=1/2x-2
But the answer is y=1/2x+7/2
Where did I go wrong? Please could you show me how do this by step by step?
Thank you
JPA

Click here to see answer by Alan3354(30993)

Question 273322: Solve
5/4x+1/8x=3/8+x
This is how I did on my own
5/4x+1/8x-3/8-x=0
10/8x+1/8x-3/8-8/8=0
10x+x = 11x
11/8x-11/8=0
0=0
The answer is 1
How did they get this?
jpa
Click here to see answer by josmiceli(9680)

Question 273307: Find an equation of the line having the given slope and containing the given point. m= -3,(4,8)
The answer book gives the answer as -3x+20.
I understand how they got the -3x because the question says the m=-3. The formula is y=mx+b. How did they get the +20? Can you show me how?
Thank you
jpa
Click here to see answer by solver91311(16885)

Question 273313: how to you find the equation for A line that passes through (1,1) and is perpendicular to the line 4x+6Y=18.
Click here to see answer by scott8148(6628)

Question 273358: write an equation for the line perpendicular to y= -2/5x-4 and passes through (-3,-1)
Click here to see answer by checkley77(12569)

Question 273356: A yardstick measures 0.5 by 2 by 36 inches. How many yardsticks will fit in a box 3.5 inches wide and 36 inches high, if the length of the box is 18 inches?
Click here to see answer by checkley77(12569)

Question 273420: how do you do slope
Click here to see answer by Tobiasz(54)

Question 273320: A circle with a radius of 4 and a midpoint at (2,2)
Click here to see answer by Edwin McCravy(8909)

Question 273454: how do I graph the equation y-2x=8
Click here to see answer by jim_thompson5910(28595)

Question 273435: Given the piecewise function f(x)={(5x+1for3 ≤ x < 7,
3x-5 for7≤ x <10
determine f(9).
Click here to see answer by solver91311(16885)

Question 273547: a rectangle is twice as long as it is wide its area is 450 sq centimeters,what are the dimentions?
Click here to see answer by mananth(12270)

Question 273591: 3x+2y=6 solve for y, I can't figure it out, I need to see it step by step
Click here to see answer by jim_thompson5910(28595)

Question 273601: How do I properly graph this equation on algebra.com? x-4y=-8
I know that rise=2 run=8 and slope=1/4
My original task was to find the rise, run, and slope and then write in standard form after looking at a graph. that had a line on it.
I understand that Ax+By=C
I don't quite understand what Ax is, Bx, or C. The original problem didn't have the standard form answer of x-4y=-8, that was in the back of my text book.
I have included what I thought was the correct graph, but all it did was draw a horizontal line.
So, if you can show me what I am missing in the computer formula I would appreciate it. I would love for someone to explain how to get the standard form out of the given information
graph( 300, 200, -6, 5, -10, 10, x-4y=-8)

Click here to see answer by Theo(3464)

Question 273828: given the equation 2x+3y=4is the slope of the line discribed by this equation positive or negative how do i find out.
Click here to see answer by josmiceli(9680)

Question 273838: I am trying to help my 7th grade son and I can't when I don't remember how to do it. Here is the problem.
A rectangle has a perimeter of 52inches.
A) Write an equation describing the possible values of x and y
B) Use the intercepts from the equation to graph
C) Give 3 pairs of whole-numbers values of x and y that could represent side lengths of the rectangle.
Please show me all the steps so I can help him.
Thanks
Click here to see answer by josmiceli(9680)

Question 273898: I need help solving this for my 9th grade son
Find the line of best fit between the following points:
(1,5) and (3,8)
a) 1.5
b) 3.5
(his answers)
line: ____?_____
His answer 1.5 and 3.5 came from calculator instructions, he needs the step by step instructions for solving (without a calculator).
Any help is greatly appreciated.
Click here to see answer by scott8148(6628)

Question 273995: Put the equation 2x - 3y = 15 into slope-intercept form. Think you get two answers...right
Click here to see answer by jim_thompson5910(28595)

Question 273991: If a line with equation 3x -ky= 4 has a slope 5/6, find the value of k?
Help?
Click here to see answer by jim_thompson5910(28595)

Question 274012: I have the following information:
3 bags = 18 servings
2 servings per person
how many bags do i need for x amount of people.
Click here to see answer by richwmiller(9135)

Question 274059: Given the graph below, how do I determin the rise, run, & slope? Also, how do I determine the equation so I can write it in standard form?

Click here to see answer by josmiceli(9680)

Question 274144: What is the slope of the line for the equation 3x+3y=12?
Click here to see answer by TheGagePrice(3)

Question 274216: Find the slope, x-intercept, and y-intercept for the line 4x-8y-5=0
Click here to see answer by fractalier(2101)

Question 274198: Find an equation of a linear function o(x)for which o(3)=7 and o(-1)=5.
Then find o(20).*
*By the way...the "o" is supposed to be the symbol in my problem which is an o with a vertical line through it...I'm assuming it's just a variable like x or y.
Thanks so much for your help!
Click here to see answer by solver91311(16885)

Question 274252: write an equation of a line that passes through ( -5, 4) and )3, -2)
Write and equation of the line passing through the point (0, 6) and parallel to the line y= 2x-5
Click here to see answer by solver91311(16885)

Question 274253: contains (12, 10) and slope 5/6
Click here to see answer by checkley77(12569)

Question 274295: Using this equation (-6x +3y=2) determine the intercepts, write the equation in slope-intercept form, and write equations of a parallel and perpendicular line.
Thank you in advance.
Click here to see answer by checkley77(12569)

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