Questions on Algebra: Systems of Linear Equations answered by real tutors!

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Question 74262: 1. Solve by elimination method
4x - y = -3
y - 3 = 4x

2. Solve by graphing method
x - y = 3
x + y = 1
3. Solve by addition method
1/5x + 2/3y = -8/5
3x - y = 9
Click here to see answer by rmromero(383)

Question 74261: 1. Solve by elimination method
4x - y = -3
y - 3 = 4x

2. Solve by graphing method
x - y = 3
x + y = 1
3. Solve by addition method
1/5x + 2/3y = -8/5
3x - y = 9
Click here to see answer by rmromero(383)

Question 74263: I want to ask a queation please check to see if this is correct .If M (-7,-3) is the midpoint of segment PQ and the coordinates of Q and are(6,-3).fine the coordinates of Q .
Please see if my problem is correct .Thanks .
M(-7,-3)(6,-3)
7=3= -10 6/3=2
so if -10*2=20
so the P IS -20.-3
Click here to see answer by Cintchr(481)

Question 74292: Find values for m and b in the following system so that the solution to the system
is (-3,4).
5x+7y=b
mx+y=22
Please help!!
Thanks so much!!!
Click here to see answer by funmath(2933)

Question 74333: solve the inequality
7q-1+2q<29
Click here to see answer by bucky(2189)

Question 74362: solve the inequality
7+3t<2(t+3)-2(-1-t)
Click here to see answer by jim_thompson5910(35256)

Question 74357: solve the inequality
7+3t<2(t+3)-2(-1-t)
Click here to see answer by cathieb1225(41)

Question 74613: substitution method
-x+3y=10
2x+8y=-6
I need help with this problem if anyone could help, I would appreciate it.
Thanks!
Click here to see answer by ptaylor(2198)

Question 74615: Hi can someone please help me. Thanks in advance.
This is solving linear inequalities.
5[3t-(t-4)]-11<= - 12(t-6)-(-t)
Click here to see answer by josmiceli(19441)

Question 74885: Solve the inequality.
-4t-5>2t+13

Click here to see answer by tsuirakuakari(6)

Question 74890: solve the inequality

Click here to see answer by tsuirakuakari(6)

Question 74881: solve the inequality
15t-4>11t-16
Click here to see answer by tsuirakuakari(6)

Question 74917: Find the eqiuation of the line with x-intercept 12 ,and y-intercept 4
Click here to see answer by Alwayscheerful(414)

Question 74877: solve the inequality

Click here to see answer by tsuirakuakari(6)

Question 75064: How would you graph y=2x+2?
Click here to see answer by Alwayscheerful(414)

Question 75107: The difference of two numbers is 6. Twice the smaller is 4 more than the langer. find the two numbers.
Click here to see answer by checkley75(3666)

Question 75150: i want to check my answer on this one please tell me if i did it right.
2L+2W=72
L=2W+3
My answer is L=25 W=11
thanx!
~Carina~
Click here to see answer by ankor@dixie-net.com(22740)

Question 75138: Graph each linear equation
2x+y=2
How do you find the RIGHT numbers to subsitute x and y with, how do you know what numbers to use?
Click here to see answer by checkley75(3666)

Question 75383: solve the inequality:
3y+4>2(y+3)+y
Click here to see answer by rmromero(383)

Question 75391: solve the inequality:
5b+8/3<3b
Click here to see answer by jim_thompson5910(35256)

Question 75392: solve the inequality:
5(2h-6)-7(h+7)>4h
Click here to see answer by rmromero(383)

Question 75367: You plant a 4 foot maple tree that grows at a rate of 6 inches per year and a 2 foot birch tree that grows a t a rate of 8 inches a year. In how many years will they be the same height? What is that height?
Click here to see answer by ankor@dixie-net.com(22740)

Question 75388: solve the inequality:
3a+8/2<10
Click here to see answer by rmromero(383)

Question 75390: solve the inequality:
3w+5/4>2w
Click here to see answer by stanbon(75887)

Question 75389: solve the inequality:
3w+5/4>2w
Click here to see answer by cathieb1225(41)

Question 75384: solve the inequality:
3-3(b-2)<13-3(b-6)
Click here to see answer by cathieb1225(41)

Question 75381: solve the inequality:
2v-3/5>7
Click here to see answer by rmromero(383)

Question 75380: solve the inequality:
13k-11>7k+37
Click here to see answer by rmromero(383)

Question 75378: solve the inequality:
7q-1+2q<29
Click here to see answer by rmromero(383)

Question 75379: solve the inequality:
8a+2-10a<20
Click here to see answer by rmromero(383)

Question 75387:
solve the inequality:
7t+3t<2(t+3)-2(-1-t)
Click here to see answer by rahman(247)

Question 75385:
solve the inequality:
3.1v-1.4>1.3v+6.7
Click here to see answer by rahman(247)

Question 75375: solve the inequality:
-5-8f>59
Click here to see answer by rmromero(383)

Question 75382:
solve the inequality:
5(2h-6)-7(h+7)>4h
Click here to see answer by rahman(247)

Question 75376: solve the inequality:

Click here to see answer by nilan(17)

Question 75376: solve the inequality:

Click here to see answer by rahman(247)

Question 75457: Please help me solve thsese eqns.:
11/v -7/u =1,
9/v -4/u = 6.
Click here to see answer by psbhowmick(878)

Question 75561: Please help!!! I don't understand any of this. Any assistance you can provide will be greatly appreciated. Thanks in advance.

PG. 483
Find the solution to each system of equations by the substitution method. Check your answers. Place your solution in the form (x,y), (a,b), (p,q), or (s,t).
(2.) x = 4 - 4y (6.) 4x + 2y = 4
-x + 2y = 2 3x + y = 4
PG. 490
Find the solution by the addition method. Check your answers.
(6.) -x + y = 2 (8.) 2x + y = 4 (14.) 5x - 3y = 14
x + y = 4 3x - 2y = -1 2x - y = 6
PG. 504
Solve using two equations with two variables.
(4.) El Segundo High School put on their annual musical. The students sold 650 tickets for a value of $4375. If orchestra seats cost $7.50 and balcony seats cost $3.50, how many of each kind of seats were sold?
Click here to see answer by funmath(2933)

Question 75602: Solve each of the following systems by substitution
4x - 12y = 5
-x + 3y = -1

Click here to see answer by jim_thompson5910(35256)

Question 75601: Solve each of the following systems by substitution
8x -4y = 16
y = 2x-4

Click here to see answer by jim_thompson5910(35256)

Question 75600: Solve each of the following systems by substitution.
5x- 2y = -5
y-5x =3

Click here to see answer by jim_thompson5910(35256)

Question 75677: Write a equation in standard form for the line that passes through the point (-3,7) and has a slope of -4/5
S0 FAR I HAVE THIS BUT THEN I GET STUCK!
I PUT IT IN POINT SLOPE FORM:y--3=-4/5[x-7]
THEN i get stuck there

CAN y0U PL3AS3 H3Lp M3?!!?!?
PLEASE && THANK y0U!!
Click here to see answer by jim_thompson5910(35256)

Question 75922: I have a problem with changing this->->y=4x-11 to standard form. There are others, but If I can figure out how to do this, I'll be able to finish my homework. Here's another one that could also help->-> y=-x/3+2/3 Stupid standard form... (this is from a worksheet I got)
Click here to see answer by Earlsdon(6294)

Question 76051: What is the solution for y=0.5x+4 and 2y+2x=2 in Solving Systems Using Substitution?
Click here to see answer by checkley75(3666)

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