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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 348775: what is the slope and intercepts of y=-2?

Click here to see answer by stanbon(75887)

Question 348775: what is the slope and intercepts of y=-2?

Click here to see answer by ewatrrr(24785)

Question 348777: i would want to know how to solve this literal equation so I'd like to have all the steps on how to do this equation.
8x-4y=-12;x=-3,-1,1
Click here to see answer by JBarnum(2146)

Question 348925: 3x + 5y = 30
Which of the following equations can be used to solve for y in the linear equation above?
y = - x + 30
y = 3x + 6
y = - x + 6
y = x + 30
Click here to see answer by Fombitz(32388)

Question 349013: write the equation of the line passing through the points (2,-7) and (2,13)
Click here to see answer by solver91311(24713)

Question 349013: write the equation of the line passing through the points (2,-7) and (2,13)
Click here to see answer by jim_thompson5910(35256)

Question 348694: Solve for y: 3y + y/3 = 3(y + 3)

Click here to see answer by Fombitz(32388)

Question 349111: The following data consists of test scores and hours of preparation for 5 randomly selected students in a class. For example, the student who spent 6 hours preparing for the test had a score of 73.
Hours of Preparation 5 2 9 6 10
Test Score 64 48 72 73 82

a. Find the equation of the regression line for this data. Round values to three decimal places.

b. Find the best predicted test score for a student who spent 4 hours preparing for the test. Round to the nearest whole number

Click here to see answer by Fombitz(32388)

Question 348685: Hertz will rent you a full size car for $50 per day with unlimited mileage. Enterprise will charge you $35 per day, but adds $0.50 per mile for every mile above 100. What is the maximum number of miles you should drive an Enterprise car in one day in order for you to pay less for it than for one from Hertz?

Click here to see answer by nyc_function(2741)

Question 349146: graph : 2x+5y=0
Click here to see answer by ewatrrr(24785)

Question 349197: By looking at two linear equations the way you can tell the corresponding lines are parallel is that the slopes would be the same and the y intercepts are different that would should you.

Click here to see answer by Fombitz(32388)

Question 349257: The following data lists the total number of Papa John�s Pizza restaurants in the world at the end of the given year. This information was obtained from the company web site at www.papajohns.com.

YEAR NUMBER OF RESTAURANTS
2003 2,790
2004 2,829
2005 2,926
2006 3,015
2007 3,208
2008 3,380

a. Find the equation of the regression line for this data. Round values to three decimal places.

b. Find the best predicted number of Papa John�s restaurants at the end of 2009 and 2010.

Click here to see answer by Fombitz(32388)

Question 349283: -3x+2y=2 find the slope and y-intercept and graph
Click here to see answer by ewatrrr(24785)

Question 349351: graph 3x-y=13 when x-values are 1,2,3,4

Click here to see answer by ewatrrr(24785)

Question 349408: how do you solve the problem 5x=4x+8?
Click here to see answer by nyc_function(2741)

Question 349438: write an equation of the line containg the given point and parallel to the given line..
(6,-1); 4x-(-5y)=6
4x minus negative 5y = 6
Click here to see answer by mananth(16946)

Question 349371: how to do 8s+9=7s+6
Click here to see answer by nyc_function(2741)

Question 349418: how do you solve the problem 14x+3=19x+23?
Click here to see answer by nyc_function(2741)

Question 349497: what is the parallel to the x-axis passing through (-1,3)?
Click here to see answer by jim_thompson5910(35256)

Question 349521: Find an equation of the line containing the points (8, 7) and (8, 5). once i worked it i came up with.

5 7 2
8 8 = 0 = 0

m=0 or do you put undefined ?????
Click here to see answer by Alan3354(69443)

Question 349550: How do i graph y<-2x-1?
Click here to see answer by Theo(13342)

Question 349454: Is there a difference between solving a system of equations by the algebraic method and the graphical method? Why or why not?
Click here to see answer by Theo(13342)

Question 349605: if the graph of the equation ax + 3y =9 is perpendiculer to 3x + y =-4 whats the value of a
Click here to see answer by Fombitz(32388)

Question 349688: (10, -15), (4,19)
Click here to see answer by Fombitz(32388)

Question 349734: find y-intercept of y=4x-64
Click here to see answer by jim_thompson5910(35256)

Question 349745: Write the equation in slope-intercept form for the line passing through each pair of points (-1,3) and (2,-5)
Click here to see answer by jim_thompson5910(35256)

Question 349745: Write the equation in slope-intercept form for the line passing through each pair of points (-1,3) and (2,-5)
Click here to see answer by solver91311(24713)

Question 349760: its told me ...graph x+2y=4
Click here to see answer by solver91311(24713)

Question 349767: 4(x + 5)=16
Click here to see answer by checkley77(12844)

Question 349767: 4(x + 5)=16
Click here to see answer by nyc_function(2741)

Question 349786: How do I solve this problem, -3(x+5)=8x+18.
Click here to see answer by nyc_function(2741)

Question 349712: Find the zeros of the given function f..
f(x)=4x^3-4x^2+8x
Click here to see answer by nyc_function(2741)

Question 349804: write in standard form the equation of a line given slope=2/5 through the point (-1,3)
Click here to see answer by checkley77(12844)

Question 349979: how would i make a linear equation out of this sentence: In a chemistry class, 12 L of a 12% alchol solution must be mixed with a 20% solution to get a 14% solution. How many liters of the 20% solution are needed?
Click here to see answer by stanbon(75887)

Question 349948: what is the slope of the line 3x-4y=8
find the w and y intercept for 3x + y = 2
Click here to see answer by cdmcg(2)

Question 350056: 2x-4y=16 solve for x and y intercept
Click here to see answer by mananth(16946)

Question 350058: I don't know what to do at all with this one. Explain step by step please. 2/3x-5/6x-3=1/2x-5. Thank you! :D
Click here to see answer by mananth(16946)

Question 350107: y=3+2x

Click here to see answer by checkley77(12844)

Question 350152: find the slope of a line perpendicular to 2x-5y=3
Click here to see answer by CharlesG2(834)

Question 350162: Find the y and x intercepts for the equation. then graph it
4y=-28 + 7x
Click here to see answer by rfer(16322)

Question 350205: Hey I have a table of values chart and I need to find out the equation that fits a linear model, quadratic model and exponential model.
Can You just help me out with what I have to do to plug in the values into which equation. The table of values chart is below:
X = (Y)
1 =(14 000)
2 =(9100)
3 =(4000)
4 =(4000)
5 =(3000)
How do i find out the linear model, quadratic model and exponential model for this table.
Please can someone help me...ive been stuck on this question for a long time...Thank You!
Click here to see answer by Fombitz(32388)

Question 350251: 1. Write in simplest form with the answer using only POSITIVE expoonents:
(x^5 y^7)(xy)/ (x^9y^3)^2
2. Solve
(x^2+11x+24=0
3. Simplify the radical
(9a^2/49b^2
4. Factor
(3x^2+8x+5)
Thank you...
Click here to see answer by Fombitz(32388)

Question 350254: 5. Simplify and state the answer in scientific notation.
(9x10^-4)/(3x10^-6)
Thank you.
Click here to see answer by Fombitz(32388)

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