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

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Question 80167: is this a linear equation 4x-2y=-1 explain
Click here to see answer by jim_thompson5910(28595)

Question 80171: is this a linear equation -2x+3=4y explain
Click here to see answer by sofiyacherni(99)

Question 79915: Find the slope of the line passing through the points (0, –3) and (–7, 1).
Click here to see answer by Omarts(2)

Question 80170: is this a linear equation y-4x=9 explain
Click here to see answer by checkley75(3666)

Question 78834: A common mistake when solving equations is the following:
The equation: 2(x- 2) = x+ 3
First step in solving: 2x- 2= x + 3
Write a clear explanation of what error has been made. What could be done to
avoid this error?

Click here to see answer by vertciel(183)

Question 80392: Solve each of the following systems of linear inequalities graphically.
10. 3x – y < 6
X > 1
Y < 3

Click here to see answer by Edwin McCravy(8909)

Question 80482: how i do this: x+2y=8
Click here to see answer by checkley75(3666)

Question 80513: Hello out there,I had some problems that I need help with,and thanks to whoever can help,The first one is,Write an equation in slope-intercept form of a line with the following characteristics:perpendicular to the graph of:2x-3y=12 and passes through (4,3).Second one is,Determine the type of relationship a scatter plot of the data would show:the distance from an object versus its apparent size.(I really don't understand that one or the next)The next one is,Determine the type of relationship plot of the data would show:the number of students attending a basketball game versus the noise level in the arena.And the last one is,Determine the x-intercept of the graph:2x+4y=8.Thanks to whoever can help me.
Click here to see answer by stanbon(57347)

Question 80551: i need help with this problem.
-3x+4y=11
rewrite as a function of X
please help.
Click here to see answer by tutorcecilia(2152)

Question 80687: how do i solve a linear equation given two points
Click here to see answer by rapaljer(4667)

Question 80600: y=2x-3
Click here to see answer by rapaljer(4667)

Question 80720: Write the equation of the line with slope 5 and y intercept (0,-3)
Can someone please help me with this?
Click here to see answer by josmiceli(9678)

Question 80727: Here is my question'
A coffee shop sells coffee for $7.60 for a 12-ounce bag and $11.60 for a 20-ounce bag. The store just came out with a 28-ounce bag. What would be a good price for the bag? Solve by making a graph.I need the answer.
I really need this A.S.A.P Thankyou
Click here to see answer by stanbon(57347)

Question 80733: The pitch of a roof is its slope. Find the pitch of the roof shown.
8 feet by
15 feet

Click here to see answer by tutorcecilia(2152)

Question 80388: 20. 8x – 4y = 16
y = 2x – 4

Click here to see answer by daniellagirl89(3)

Question 80388: 20. 8x – 4y = 16
y = 2x – 4

Click here to see answer by jim_thompson5910(28595)

Question 80855: Determine which two equations represent parallel lines
a)y=6x-2
b) y=-6x+2
c)y=6x+1
d)y=-1/6x-2
and
Determine which two equations represent parallel lines.
a)y=6x-4
b)y=1/6x+4
c)y=-1/6x+4
d)y=1/6x-4
I really appreciate the help, thanks so much.

Click here to see answer by stanbon(57347)

Question 80930: Find the slope of the line passing through the points (8,20) and (7,8.
Click here to see answer by checkley75(3666)

Question 80993: Hello out there,I need some help with some math problems that I'm having a hard time with,the first one is,Determine the y-intercept of the graph:-3x-5y=15.The next one is,Determine the slope and y-intercept of the graph:3x+y=8.The next one is,Determine the slope and y-intercept of the graph:-x+2y=4.And the last one is,Change y=x-3 so that the graph of the new equation has a steeper,negative slope and the same y-intercept.Thanks to whoever can help me.
Click here to see answer by tutor_paul(490)

Question 81057: I am having major problems understanding slope and intercepts.
How do I write an equation for the following:
Slope = -2 y-intercept = (0,4)
Slope = 5 y-intercept = (0,-2)
Click here to see answer by funmath(2925)

Question 81223: Given: f(x) = 5x – 1; Find f(a-2)
Click here to see answer by Edwin McCravy(8909)

Question 81209: Hi,My question is how do you write an equation of the line in point-slope form that passes through the given point and has the given slope. (2,-1),m = 3
Click here to see answer by scott8148(6628)

Question 81300: I needed to create a linear equation or inequality for my math class.
I created c=pg(52)
Where c=$4664.40 (cost of gas for the year)
p=$2.99 (price of gas per gallon)
g= 30 (number of gallons used)
(52) Weeks for the year
My teacher asked me to graph my equation by doing the following:
Vary either the price of gas or the number of gallons.
How do I graph this equation by doing what my instructor suggested? I am confused ;0/ PLEASE HELP!!!
Click here to see answer by stanbon(57347)

Question 81224: Evaluate: f (x) = x - 7x + 10;
Find: a) f(0)
b) f(5)
c) f(-2)
Click here to see answer by tutor_paul(490)

Question 81364: i need help with this question and it is due today.
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
Click here to see answer by ankor@dixie-net.com(15652)

Question 81558: solve for x
10x + 3 = 4(x -1) + 1
Click here to see answer by tutorcecilia(2152)

Question 81557: solve for x
10x + 3 = 4(x -1) +1
Click here to see answer by tutor_paul(490)

Question 81583: What is the slope of the line passing through (0,-1) adn (3, -2)?
A. 1/3
B. -1/3
C. 3
D. -3
Click here to see answer by tutorcecilia(2152)

Question 81565: please help.
rewrite the equation 4x-10y=11 as a function of x.
thanks so much.
Click here to see answer by tutorcecilia(2152)

Question 81582: Solve The System of Equations.
2x + 3y = 12
x + 2y = 7
I have gotten this far.

[2 3] [x] = [12]
[1 2] [y] = [7 ]

[2 -3]
[-1 2]
*I am so confused please help*
Click here to see answer by vertciel(183)

Question 81572: Conside the linear equation D=RT, where D is distance in miles, R is speed in miles per hours. If I traveled at a speed of 50 miles per hour, find the time it takes me to catch up to a car traveling at 30 miles per hour that had a 200 mile head start.
Click here to see answer by scott8148(6628)

Question 81574: Conside the linear equation D=RT, where D is distance in miles, R is speed in miles per hours. If I traveled at a speed of 50 miles per hour, find the time it takes me to catch up to a car traveling at 30 miles per hour that had a 200 mile head start.
Click here to see answer by scott8148(6628)

Question 81562: solve for x
What number is one-third of one-fourth of one-fifth of 600?
Click here to see answer by checkley75(3666)

Question 81560: solve for x
5x - 7 = -7 = 2(x = 3)
Click here to see answer by checkley75(3666)

Question 81662: Graph -2x=y+3 using the slope-intercept form.
Click here to see answer by tutorcecilia(2152)

Question 81660: Find the distance between (1,4) and (-3,1).
Click here to see answer by tutorcecilia(2152)

Question 81665: Graphs/81664 (2007-05-11 11:05:43): I can't seem to fully understand how to get through the whole process to the answer.
in the book the problem states as follows:
5y-3x=15
let y=0 5y-3x =15
5(0)-3x =15
-3x =15
x =15
let x=0 5y-3x =15
5y-3(0)=15
5y =15
y =3
let y=6 5(6)-3x =15
30-3x =15
-3x = - 15
- 15
x = -15/-3 or 5
okay, this is the example in the book. I don’t understand where the uses of the 6 as y comes in. Please help. thank you.
0 solutions
Click here to see answer by jim_thompson5910(28595)

Question 81680: 1,2,0,3,2,0
1,0,3,2,0,2
1,2,0,4,1,5
1,0,0,2,3,4
Click here to see answer by Edwin McCravy(8909)

Question 81661: Find the x and y intercepts of y=4x-4.
Click here to see answer by tutor_paul(490)

Question 81683: HOW I SOLVE 3N+20=170 I THINK THAT I NEED TO ADD AND TIMES BUT I DONT HAVE IDEA OF WHAT IS THE ANSWER PLEASE GIVE ME THAT ANSWER TO ME STUDY FOR THE TEST OF THE CITY OF BOSTON MA

Click here to see answer by stanbon(57347)

Question 81681: Hello out there,I'm writing about some problems that I need help with and thanks to whoever can help,the first one is,Determine the slope and y-intercept of the graph :3x+y=8.The next one is,Determine the slope and y-intercept of the graph:-x+2y=4.The next one is,Write an equation in slope-intercept form of a line with the following characteristics:Perpendicular to the graph of:y=3/2x-3 with a y-intercept of 5.And the last one is,Write an equation in slope-intercept form of a line with the following characteristics:parallel to the graph of:-4x+3y=12 and passes through the origin.Thanks for any help that I can get.
Click here to see answer by stanbon(57347)

Question 81691: How do I multiply 4xy3 * 2x2y * 5xy2? the 3 by y is small, and both 2's by the y's are small meaning times that number. I'm so lost could anyone help me solve this problem?

Click here to see answer by ankor@dixie-net.com(15652)

Question 81696: I'm super lost on this one, can anyone help me solve?
Divide: 24m(4)n(2) – 8m(2)n(3) + 4m(3)n/4m(2)n

Click here to see answer by checkley75(3666)

Question 81563: solve for x
3x + 1/2 = 1/4
Click here to see answer by ankor@dixie-net.com(15652)

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