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

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Question 148344: The point (2, -5) is a solution to which of the following equations?
y = -3x + 1
y = -3x - 5
y = -3x - 3
y = -3x + 5

Click here to see answer by Edwin McCravy(20056)

Question 148343: Give three ordered pairs that are solutions to the equation 3x - y = 8.

Click here to see answer by Edwin McCravy(20056)

Question 148339: Solve the System:
2x-y+2z=11
3x-2y-z=12
x-3y-z=1
Click here to see answer by Electrified_Levi(103)

Question 148379: 5 4 1 Solve the following literal equation for y.
___ - ____ = ___
a y b
Click here to see answer by mangopeeler07(462)

Question 148379: 5 4 1 Solve the following literal equation for y.
___ - ____ = ___
a y b
Click here to see answer by stanbon(75887)

Question 148374: How would I go about solving a system of equations with three equations and three variables.
4x-4y-z=38
x+4y-3z=6
-3x+2y-z=-14
Please explain step by step, I would appreciate it. Thank you.
Click here to see answer by Fombitz(32388)

Question 148914: I need help on these two questions
1. Solve for x when [5x-7]=14
2. Multiply the complex numbers (4+3i)(6+i)
Click here to see answer by mangopeeler07(462)

Question 148917: Solve the system of linear equations by the substitution method. Then, state whether the system is independent, dependent, or inconsistent.
-x+7y=4
-x+7y=3
Click here to see answer by nabla(475)

Question 148873: 4-(y-3) = x+3 1st equation
10+x
―�―� = 2+(y-12) 2nd equation
3

Click here to see answer by Electrified_Levi(103)

Question 148936: y = 3x + 2
2x + y = - 8

Click here to see answer by checkley77(12844)

Question 148936: y = 3x + 2
2x + y = - 8

Click here to see answer by stanbon(75887)

Question 148874: 4-(y-3) = x+3 1st equation

10+x = 2+(y-12)2nd equation
----
3

Click here to see answer by Alan3354(69443)

Question 149098: Problem: Joe has a collection of nickels and dimes that is worth $5.65. If the number of dimes were doubled and the number of nickels were increased by 8, the value of the coins would be $10.45. How many dimes does he have?
Click here to see answer by ankor@dixie-net.com(22740)

Question 149113: Find the solution by substitution:
3x-2y=-5
x=y-2
Click here to see answer by checkley77(12844)

Question 149142: Find the solution by substitution:
4x+3y=5
2x-y=-5
Click here to see answer by mangopeeler07(462)

Question 149111: Find the solution by substitution:
4x+3y=5
2x-y=-5

Click here to see answer by Alan3354(69443)

Question 149112: Find the solution by substitution:
3x+8y=22
10x-2y=16
Click here to see answer by 24HoursTutor.com(40)

Question 149211: -x + y = 4
2x - 5y = -14
I am completely stuck on how to go about doing this problem.
I know that the Solutions x and y are always intergers between 5 and -5.
Each time i try I come up with No Solution.
But I am being told that is wrong.
x = ?
Y = ?
If you could, please show me a few steps on How to get the answer
to this problem.
I would greatly appreciate your help
Thank You,
Kerry G.
Click here to see answer by Fombitz(32388)

Question 149291: Solve the system of equations.
1.25x � 2y = 1.3125
x + 2y = �0.75

A) {(1.75, 1.5)}
B) {(0.75, 0)}
C) {(0.25, �0.5)}
D) {(1.75, �0.5)}
Click here to see answer by stanbon(75887)

Question 149290: If the circumference of a circle is 12 meters, then what is its diameter?
Click here to see answer by jim_thompson5910(35256)

Question 149287: Write the slope-intercept equation of the line l that goes through (12, 3) and has a slopeof 1/3
.
Click here to see answer by Alan3354(69443)

Question 149287: Write the slope-intercept equation of the line l that goes through (12, 3) and has a slopeof 1/3
.
Click here to see answer by checkley77(12844)

Question 149285: Find the equation (in standard form) of the line through (1, �7) and (4, �1). Match your result to the correct answer below.
A) 2x + y = 9
B) x-2y=18
C) 2x � y = 9
D) x-2y=9
Click here to see answer by Alan3354(69443)

Question 149286: Determine whether the lines l1 and l2 are parallel, perpendicular, or neither.
Line l1 goes through (3, �8) and (�3, 9). Line l2 goes through (�1, �5) and (�7, 12).
Click here to see answer by Alan3354(69443)

Question 149378: the sum of digits of two digit number is 5 . the digit obtained by increasing the digit in tens place by units 1/8 of the number . find the number

Click here to see answer by stanbon(75887)

Question 149509: Complete the equation of the line L satisfying each of the following sets of geometric conditions by determining the value of b1 and b0.
L passes through point (0,-4) and is parallel with the line 3x - y = 6. (y = b1x + b0) I got b1=-3 and b0= -4. Is this right.
Click here to see answer by stanbon(75887)

Question 149515: How do I solve the following system of linear equation
5x + 4y = 40
x + 2y = 11
Click here to see answer by Alan3354(69443)

Question 149514: How do I solve the following system of linear equation
4x - 3y = 9
2x + y = 12

Click here to see answer by tryin2bhelpful(6)

Question 149513: how do I solve the following system of linear equation
4x +2y = 4
Y = 2 - 2x
Click here to see answer by jim_thompson5910(35256)

Question 149678: If a certain number is 3 more than 7 times itself, what is the number?
Click here to see answer by Alan3354(69443)

Question 149688: How do I solve 5x+4=7 and x-3y=9. I have to find the graph
Click here to see answer by ankor@dixie-net.com(22740)

Question 149689: How do I solve 5x+4=7 and x-3y=9. I have to find the graph
Click here to see answer by Alan3354(69443)

Question 150307: y=18x+10 & 2y=18x+10
Click here to see answer by mangopeeler07(462)

Question 150403: 9. 2x - 4y - 14 = 0
15. y = -x -15
I don't understand how to do Linear's can u please tell me step- by- step.
Click here to see answer by jim_thompson5910(35256)

Question 150403: 9. 2x - 4y - 14 = 0
15. y = -x -15
I don't understand how to do Linear's can u please tell me step- by- step.
Click here to see answer by stanbon(75887)

Question 150457: Solve for k
8asquared bcubed
over
3k
equals 4a
Click here to see answer by jim_thompson5910(35256)

Question 150713: if the line containing points (-8,m) and (2,1) is parallel to the line containing points (11,-1) and (7,m+1), what must be the value of m?
Click here to see answer by vleith(2983)

Question 150730: 4x+3y =-28
5x-6y =-35

please solve using elimination method
Click here to see answer by Fombitz(32388)

Question 150729: 5x-2y=-16
2x+ y= 8
please solve using elimination method
Click here to see answer by Electrified_Levi(103)

Question 150807: Please help with this problem.
Z=sqrt((1000^2)+(1592^2))
It is my understanding that the square root of a "number" squared is the "number".
If this is true I would solve this as: Z=1000+1592 so Z=2592, but Im not sure this is correct
Click here to see answer by jim_thompson5910(35256)

Question 150985: This is a summer Assignment. I don't have a book.
"Write the equation of the line perpendicular to the line y=1/2x + 2 that passes through the point (-4,5)."
Click here to see answer by jim_thompson5910(35256)

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