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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 52825: having trouble solving:
a=1/2(B+b)h for b and also
2k+ar=r-3y
Click here to see answer by funmath(2925)

Question 52830: I am having trouble solving: 2k+ar=r-3y
Click here to see answer by rchill(405)

Question 52832: Having trouble solving: 2k+ar=r-3y solve for r
Click here to see answer by rchill(405)

Question 52935: graph the equation.
y = 4x + 1
Click here to see answer by rchill(405)

Question 52934: draw the line with the given slope and y-intercept.
m = -2, b = 0
Click here to see answer by rchill(405)

Question 53000: In planning for a new item, a manufactuer assumes that the number of items produced x and the cost in dollars C of producing these items are related by a linear equation. Projections are that 100 items will cost $10,000 to produce and that 300 items will cost $22,000 to produce. Find the equation that relates C and x
Driving down a mountain, Tom finds that he has descended 1800 ft in elevation by the time he is 3.25 mi horizontally away from the top of the mountain. Find the slope of his descent to the nearest hundredth.
Click here to see answer by tutorcecilia(2152)

Question 53011: I need help on how to solve Equations by multiplying the LCD!!!!!!
Here's one of my problems: 1/2 - x/30 = 3(x + 7)/90.
Here's how it shold read if it makes no sense to you, one half minus x over thrity equals three x plus seven divided by nintey.
I hope that will make it easier for you to solve it.
Click here to see answer by AnlytcPhil(1276)

Question 53051: Here's a problem that I can not figure out.
8-x/3=6(x+1)/7
I really appreciate you helping me out.
Click here to see answer by checkley71(8403)

Question 53074: 2x>5x+18 the great sign is great or equal to
Click here to see answer by consc198(59)

Question 53185: Find the slope of the line.
3x - 5y = 5
Click here to see answer by checkley71(8403)

Question 53304: I need to graph the y=-2x-2 and 3y=-x-6 Please help I know in the last one I need to get the 3 away from the y. So does it look like this y=1/3x+2?
Please help
Click here to see answer by funmath(2925)

Question 53346: i am not sure how to fine 5 answers out of 1 equation
graph each equation. plot at least 5 points for each equation.
60. x+4y=5
Click here to see answer by funmath(2925)

Question 53348: I am not sure how to typ this in you slover on equation. What is L1 and L2 I know how to graph points of origin but i do not understand what thes are.
Draw L1 through (-4,0) and (0,6) what is the slope of any line parellel to L1? Draw L2 through the point of origin and parallel to L1?
Click here to see answer by funmath(2925)

Question 53167: what are the values of w,x,y, and z in these equations?
1. w + x + y + z = 2
2. 2w - x - y +2z = 7
3. 2w + 3x + 2y - 2z = -2
4. 3w - 2x - y -3z = -2
Click here to see answer by ankor@dixie-net.com(15624)

Question 53396: I have a pie chart that has Second day air freight 40%, next day air freight 15% and truck 45%. The question is if the company shipped a total of 550 items last month, how many were shipped using second day air freight? McGraw Hill 6th edition, chapter 6, section 5, problem # 12. Thanks so very much for your time!!!
Click here to see answer by stanbon(57219)

Question 53461: find the slope and y intercept
is the intercept wher ethe line crosses the asis
3x+5y+10=0

Click here to see answer by Earlsdon(6287)

Question 53459: x+2y=3
find th eslope and y intercept for each line the has a slpoe and y intercept
Click here to see answer by checkley71(8403)

Question 53460: y=1/3x + 1/2
determine wether the lines are parallel, perpendicular or neither

i have a lot of problems working with fractions
Click here to see answer by checkley71(8403)

Question 53456: i am not sure how to do this problem
graph teh inequality
2x+5y greater than and equal to 10
Click here to see answer by tutorcecilia(2152)

Question 53456: i am not sure how to do this problem
graph teh inequality
2x+5y greater than and equal to 10
Click here to see answer by KIRA21234(1)

Question 53547: A medical research is studying the spread of a virus in a population of 1000 mice. During any given week there is an 80% probability that an infected mouse will overcome the virus, and during the same week there is a 10% probability that a noninfected mouse will become infected. one hundred mice are currently infected with the virus. How many will be infected next week? In 2 weeks?
Click here to see answer by stanbon(57219)

Question 53608: Line l goes through (2,5) and is parallel to the x-axis
Click here to see answer by stanbon(57219)

Question 53608: Line l goes through (2,5) and is parallel to the x-axis
Click here to see answer by rchill(405)

Question 53570: Find the slope and y intercept of the line represented by each questions
What is y = -3x - 6
Click here to see answer by rchill(405)

Question 53458: 1/2x-9=0
write in standard form using only intregers
Click here to see answer by rchill(405)

Question 53446: okay i am having problems solving this one its easy i know i must be missing a step -[3x-(2x+5)=-4[3(2x-4)]-3x
Click here to see answer by rchill(405)

Question 53077: P=2L + 2W (for the L)
Click here to see answer by rchill(405)

Question 53019: How do you solve 4x+y=5
2x+5y=7
Click here to see answer by rchill(405)

Question 53643: Find the slope of the following:
The line that passes through (0,0), (3,9)
Click here to see answer by funmath(2925)

Question 53053: I need help with this problem,
7-x/4=5(x+1)/9
Click here to see answer by rchill(405)

Question 53642: Consider the linear equation represented by y=6x+12
i. Find the x-intercept of its graph
ii. Find the y-intercept of its graph
iii.Does its graph pass through the point(-1,6)
Click here to see answer by rchill(405)

Question 53646: determine the equation of the line passing through the points (-2, 5), (8,-9), and (0,1).
Click here to see answer by funmath(2925)

Question 53644: Find the slope of the following:
The line that passes through (3,-5), (3,14)
Click here to see answer by rchill(405)

Question 53647: determine the equation of the line passing through the point (-2,3) and perpendicular to the graph of x+y=24
Click here to see answer by venugopalramana(3286)

Question 53645: determine the validity of the statement below, and illustrate how you have arroved at your inference.
i. y-2=3(x-2)
ii. y=X-4
Click here to see answer by venugopalramana(3286)

Question 53641: Find the midpoint of line segment PQ for the ordered pairs: P(6,8); Q(6,8).
Click here to see answer by venugopalramana(3286)

Question 53640: if m(-11,13) is the idpoint of segment PQ and the coordinates od P are (-6,6), find the coordinates of Q.
Click here to see answer by Edwin McCravy(8880)

Question 53661: find the linear depreciation equation for the TV in the advertisement shown below:
Three (3) years old flat screen TV;
Matrix surround sound with PIP remote
Bought new-$7,500.00; Asking $2,500.00
Click here to see answer by AnlytcPhil(1276)

Question 53687: Two families drive from Kingston to Niagara Falls. The Maretti family leaves first and travels at an average speed of 85 km/h. The Khan family leaves Kingston once the Maretti family has travelled 40 km, and travels at an average speed of 95 km/h. Determine how far they have travelled when the families have both gone the same distance.
Click here to see answer by stanbon(57219)

Question 53727: hi i need help with 1. finding the slope for -1/2x-y=3/4
2. How do you graph y>|x+2|-3
Click here to see answer by funmath(2925)

Question 53639: 3x-2y>0
if x =0 then y=-0/3, if y=0 then x=-0/2
is this possible
Click here to see answer by stanbon(57219)

Question 53659: find the slope of the following:
The line determinded by the equation.
4y=6x+12
Click here to see answer by stanbon(57219)

Question 53751: (-4,0) slope 5/2
y-0= 5/2(x--4)
y-0 = 5/2x-15
+0 +0
y= 5/2- -10
Is this how to solve this problem... If not could you please show me how and what exactly I did wrong..
Click here to see answer by stanbon(57219)

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