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Tutors Answer Your Questions about Linear-systems (FREE)
Question 125139This question is from textbook Intro to College Mathematics
: 1. Given f(x) = 4-x-x^2. Find f(3)
2. Find the domain of the function F given by F(x)=x+4/x
3. Solve by substitution: x=4y + 3; 2x + 5y = 6
4. Solve the system of equations: 2x - y =5 and x + 2y = 10. Put the answer in the form of (x,y).
5. Solve the system of equations: y=x+7; 2x +3y = 6. Put the answer in the form of (x,y).
6. Solve the system of equations: 4x - 3y =15; 3x + 5y =4. Put the answer in the form of (x,y).
This question is from textbook Intro to College Mathematics
Click here to see answer by solver91311(5072)   |
Question 125339: This is from MYMATHLAB Book from school
Find an equation of the line containing the given pair of points. Express your answer in the form x=a, y=b, or y=mx+ b
(-5, -5) and (5,5)
What is an equation of the line?
y=
Simplify your answer
Click here to see answer by stanbon(26259)  |
Question 125832This question is from textbook Algebra I
: This is my son'd hoework assignment, in the back of the book on page 803 in the extra practice section he has to solve proble # 18using linear combinations to solve linear equations. The problem is:
3x+7y=-1
7y=-6x
If I rearrange the equation to solve it looks like this:
3x+7y=-1
-6x-7y=?
Now what do we do?This question is from textbook Algebra I
Click here to see answer by checkley71(8405) |
Question 125832This question is from textbook Algebra I
: This is my son'd hoework assignment, in the back of the book on page 803 in the extra practice section he has to solve proble # 18using linear combinations to solve linear equations. The problem is:
3x+7y=-1
7y=-6x
If I rearrange the equation to solve it looks like this:
3x+7y=-1
-6x-7y=?
Now what do we do?This question is from textbook Algebra I
Click here to see answer by Earlsdon(4898) |
Question 125832This question is from textbook Algebra I
: This is my son'd hoework assignment, in the back of the book on page 803 in the extra practice section he has to solve proble # 18using linear combinations to solve linear equations. The problem is:
3x+7y=-1
7y=-6x
If I rearrange the equation to solve it looks like this:
3x+7y=-1
-6x-7y=?
Now what do we do?This question is from textbook Algebra I
Click here to see answer by josmiceli(3003) |
Question 125976: I am hoping you can help me with this one, I think I got the right answer, but my grade is falling rapidly and I need to check to see if it is right so that I don't make silly mistakes that cost me.
The question is from a worksheet:
Solve the system by substitution
2x+2y=0
y=4x +0
I came up with y=4x
Is this even close. I am paranoid now about the answers I get so I just want to make sure I am doing them right. Thanks so much.
Click here to see answer by jim_thompson5910(13787) |
Question 126515: I hope this is posted in the correct place. I need some help I do not understand how to do this. Thanks for any help you can give.
solve by elimination process.
0.3x -0.2y = 4
0.5x + 0.3y = 5
What is the solution of the system. It asks for an ordered pair. Thanks so much.
Click here to see answer by stanbon(26259) |
Question 126654This question is from textbook Beginning Algebra
: 2x+3y=1
5x+3y=16 Solve, state if inconsistent or dependent
3y=2x+1
divide both sides by 3y=
y=2x+1/3
y=2x/3+1/3
confused on the LCM...6?
I believe once I reduce the top I then add the y into the bottom equation of
5x+(3)( y )x+(3)(y)=16
I can not go any further because I am confused on the LCM of the first equationThis question is from textbook Beginning Algebra
Click here to see answer by solver91311(5072) |
Question 126657This question is from textbook Beginning Algebra
: 8x-4y=16
y=2x-4
Solve by substition
4y=8x-16
divide both sides by 4y
y=8x-16/4
y=8x/4+16/4
y=4x/2+16/4
reduce
y=2x+4
Upon plugging top equation of y into bottom equation, I became confused I came up with
y=2x-4 and y=2x+4
I must have done something wrong along the line
This question is from textbook Beginning Algebra
Click here to see answer by bucky(1732) |
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