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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 40995: Find the equation, in standard form, with all integer coefficients, of the line perpendicular to 3x-4y=9 and passing through (-2,-1)
Click here to see answer by zeynep(43)

Question 41320: I need help figuring 5x + 8 + 3x - x + 5 = 6x - 3
Click here to see answer by vidhyak(98)

Question 41378: How do you write an equation in slope-intercept form when given the x and y-intercepts?
Example:
x-intercept 3, y-intercept 2
Click here to see answer by venugopalramana(3286)

Question 41379: How do you write an equation in slope-intercept form when given the x and y-intercepts?
Example:
x-intercept 3, y-intercept 2
Click here to see answer by venugopalramana(3286)

Question 41453: Having trouble understanding Slopes and graphs portion of my Algebra class. please help.
The problem is
Determine which two equations represent parallel lines.
(a) y = 6x � 10 (b) y = �6x + 10 (c) y = 6x + 5 (d) y = x � 10
Thnks you
Click here to see answer by venugopalramana(3286)

Question 41500: what graph do you use to express the Y and x axis cordinates which are
x = -2,-1,0, 1, 2, and y = .25, .5, 1, 2, 4
Click here to see answer by stanbon(75887)

Question 41454: Having trouble This Problem in my Algabra class.
The problem is
Which of the ordered pairs
(�1, 2), (7, 0), (3, �1), (�17, 6)
are solutions for the equation x + 4y = 7?

Thnks you
Click here to see answer by Nate(3500)

Question 41518: my question is I need to write the equation for the line satisfying the given information, then write it in slope-intercept form. Graph the equation, and show both of the intercepts.
Passes through the points (10,42.3)(20,51.5)
Passes through through the points(100,2.2)(150,1.9)
passes through the poins(1/2,-1/2) with slope 1/2
passes through the points(-10.4,0.3)(5,34,000)
Click here to see answer by psbhowmick(878)

Question 41581: For f(x) = 3x � 5, find f(2).
Click here to see answer by stanbon(75887)

Question 41591: it say to use the substitutuon

y=x+2
2x+y=8

x+y=3
3x+y=3

3x-y=9
2x+y=6

I hope you ca help I need to know how to do this for my examine
Click here to see answer by Nate(3500)

Question 41593: please help it say use the substitution method to solve the linear system
x+2y=-5
4x-3y=2

32-2y=4
x+ 3y=5

3x+y= -2
x+3y=2
Click here to see answer by checkley71(8403)

Question 41549: Determine whether -4 satisfies each compound inequality
-3x > 0 and 3x - 4 < 11

Graph the solution set to each compound inequality.
x > -2 and x is less than or equal to 4

x > 3 or x < -3

Solve each compound inequality. Write the solution set in interval notation and graph it.
-1 is less than or equal to 3 - 2x < 11

Solve each problem by using a compound inequality.

Two tests only. Professor Davis counts his midterm as 2/3 of the grade, and his final as 1/3 of the grade. jason scored only 64 on the midterm. What range of scores on the final exam would put Jason's average between 70 and 79 inclusive?

Senior citizens. The number of senior citizens (65 and over) in the United States in millions n years after 1990 can be estimated by using the formula s - 0.38n + 31.2. The percentage of senior citizens living below the poverty level n years after 1990 can be estimated by using the formula p = -0.25n + 12.2.
a) how many senior citizens were ther in 2000?
b) In what year will the percentage of seniors living below the poverty level reach 7%?
c) What is the first year in which we can expect both the number of seniors to be greater than 40 million and fewer than 7% living below the poverty level?
Click here to see answer by stanbon(75887)

Question 41609: it tell you to use the substitution method to solve the linear system
x +2y = - 5
4x-3y=2

3x-2y=4
x+3y=5

3x+y= -2
x+3y=2
Click here to see answer by K N Swamy(1)

Question 41789: please help me solve this equation...
(5x+2y=10)

thank you
Click here to see answer by longjonsilver(2297)

Question 41789: please help me solve this equation...
(5x+2y=10)

thank you
Click here to see answer by psbhowmick(878)

Question 41781: I HOPE YOU CAN HELP
USE THE SUBSTITUTION METHOD TO SOLVE THE LINEAR SYSTEM
1. X + 2 = -5
4x -3y = 2

2. 3x - 2y =4
x + 3y = 5

3. 3x + y = -2
x + 3y = 2
Click here to see answer by tutorcecilia(2152)

Question 41845: Convert to scientific notation:
0.003816

Click here to see answer by checkley71(8403)

Question 41906: I was wondering if you still answer questions because i have not received and answer in a few days

these were the question. it says use the substitution method to solve the linear system

1. 3x-2y =4
x+3y =5

2. 3x+y = - 2
x + 3y = 2

THANK YOU IF YOU CAN HELP
Click here to see answer by AnlytcPhil(1806)

Question 41907: USE LINEAR COMBINATIONS TO SOLVE THE LINEAR EQUATIONS

1. X+ 2Y =5
3x -2y = 7

2. x + Y =1
2x - 3y = 12

3. x - y = -4
x + 2y = 5
Click here to see answer by AnlytcPhil(1806)

Question 41908: USE LINEAR COMBINATIONS TO SOLVE THE LINEAR EQUATIONS

1. X+ 2Y =5
3x -2y = 7

2. x + Y =1
2x - 3y = 12

3. x - y = -4
x + 2y = 5
Click here to see answer by AnlytcPhil(1806)

Question 41928: what does the equation y=mx+c mean?
Click here to see answer by fractalier(6550)

Question 41928: what does the equation y=mx+c mean?
Click here to see answer by AnlytcPhil(1806)

Question 41929: you gave me a site to go on and i can't get on it i am trying to see how to do these because i am out of school right now and hve no one to show me

use linear combinations to solve the system linera equation

1. x + 2 =5
3x - 2y =7

2. x + y = 1
2x -3y = 12

3. x -y = -4
x + 2y = 5

I NEED SOME HELP
Click here to see answer by AnlytcPhil(1806)

Question 41938: I AM A PARENT TRYING TO HELP MY DAUGHTER DO THIS PROBLEMS I NEVER HAD THIS MAYBE YOU COULD SHOW ME HOW SO I CAN HELP HER.

SOLVE LINER COMBINATION TO SOLVE THE SYSTEM

2X -3Y = -16
X + 3Y = 10

3X + Y = -8
-3 + 4Y = -2

2X-Y = 1
2X + 5Y = -5

THIS SAY USE ANY METHOD TO SOLVE

-2X + 3Y = 14
X-4Y = -12

IT BEEN A LONG TIME I DON'T EVEN REMEMBER HAVING THIS
Click here to see answer by venugopalramana(3286)

Question 41872: PLEAS HELP
USE LINEAR COMBINATIONS TO SOLVE THE FOLLOWING
1. 2x -3y = -16
x + 3 = 10

2. 3x + y = -8
-3x + 4y = -2

3. 2x -y = 1
2x + 5y = -5

please i need some help.
Click here to see answer by venugopalramana(3286)

Question 41814: I sent these before but for some reason i could not open it could you please help again. I have three problems to do.

it say use linear combinations to solve the system of linear.

question 1. x + 2y = 5
3x - 2y =7

question 2. x+y = 1
2x -3y =12

question 3.x - y = -4
x +2y = 5

please help
Click here to see answer by venugopalramana(3286)

Question 41939: YES I ASK THESE BEFORE BUT THEY WHERE NEVER ANSWERED BECAUSE THE SITE YOU GAVE US DIDN'T WORK
LINEAR COMBINATION TO SOLVE THE SYSTEM
2x -3y = -16
x +3y = 10

question 2. 3x + y = -8
-3 + y = -2

question 3. 2x - y = 1
2x + 5y = -5
Click here to see answer by fractalier(6550)

Question 41846: . Perform the indicated operations:
(5x2 � 3x + 2) + (-3x2 + 9x � 8) � (x2 + 3x � 10)

Click here to see answer by nik_consult(24)

Question 42060: for the line passing through (-4,2)and (1,-2)
a. compute the slope
b. find another point with integer coordinates on this line.
Find the equation of each line below
a. the slope of the line is -3 and it passes though the poine of (-2.6)
-
2

b. the line passes through the the two points (1,-3)and (2,-1)

thank you. robbie
Click here to see answer by ind_blade(2)

Question 42166: Graph the solution of the inwequality and write it in interval notation.
{x|x >-3}
Thank you
Click here to see answer by Nate(3500)

Question 42364:

How can I find the slope of the lines graphed in this.. Isn't it like -y 7
Click here to see answer by psbhowmick(878)

Question 42573: could some help me please
graph each equation
y=3x+2
Click here to see answer by jmg(22)

Question 42611: Factor completely:
x2 � 15wy + 3xy � 5wx

Click here to see answer by Fermat(136)

Question 42611: Factor completely:
x2 � 15wy + 3xy � 5wx

Click here to see answer by gsmani_iyer(201)

Question 42610: Factor completely:
2x3 � 26x2 + 80x

Click here to see answer by gsmani_iyer(201)

Question 42607: Factor each polynomial, if possible.
x^2-4
Click here to see answer by gsmani_iyer(201)

Question 42621: Factor completely:
x2 � 9x + 20

Click here to see answer by wuwei96815(245)

Question 42609: Factor each polynomial, if possible.
x^2+16+8x
Click here to see answer by Earlsdon(6294)

Question 42606: Factor each expression.
4(x+y)+t(x+y)
Click here to see answer by Earlsdon(6294)

Question 42658: Factor completely:
9x2 � 36y2

Click here to see answer by tran3209(100)

Question 42689: PRETTY PLEASE AGAIN
consider the circle given by x^2 + (y+1)^2=9
a)
Give the center aND RADIUS OF THE CIRCLE
CENTER?_______________
rADIUS?________________

Click here to see answer by rapaljer(4671)

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