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Question 246261: I have been working on this question for hours and my work doesn't add up right. Can you please show me how i would work this problem out.
Free market. The equations S = 5000 + 200x and D = 9500 - 100x express the supply S and the demand D, respectively, for a popular compact disc brand in terms of its price x (in dollars).
a) Graph the equations of the same coordinate system.
b) What happens to the supply as the price increases?
c) What happens to the demand as the price increases?

Click here to see answer by Theo(3464)

Question 246355: What is the slope of any line parallel to the line 9x + 4y = 7 ?

Click here to see answer by unlockmath(1599)

Question 246361: Find the x-intercepts of y = x^2+4x
Click here to see answer by oberobic(2304)

Question 246357: What is the slope of any line parallel to the line 9x + 4y = 7 ?
since 4y=-9x+7
i think its -9/4 but iam not even sure how i got that im so lost please explain it to me thanks
Click here to see answer by jim_thompson5910(28595)

Question 246572: Solve each system by substitution. Determine whether the
equations are independent, dependent, or inconsistent. Can you please help me to solve this equation
y= -3x+19
y=2x-1
Click here to see answer by stanbon(57347)

Question 246708: Rewrite the equations in slope-intercept form (y = mx + b)
y - 6 = 3x
3x + y = 8
3y - 6x = 9
2x + y = -4
5y - 25 = 15x
6y - 6x = 6
Click here to see answer by College Student(505)

Question 246646: Solve each system by substitution. Determine whether the
equations are independent, dependent, or inconsistent, can someone please help me solve this equation
y= -4x-7
y= 3x
Click here to see answer by ankor@dixie-net.com(15652)

Question 246791: Hi, I have a problem and I need help
The problem is to solve using the substitution method
4x+5y=-2
4y-x=11
I will solve 4y-x=11 which is 4y=x+11
then I dont know what to do
Click here to see answer by richwmiller(9135)

Question 246821: please help me to solve
2x-y=4
2x-y=3 by substitution
Click here to see answer by Alan3354(30993)

Question 246821: please help me to solve
2x-y=4
2x-y=3 by substitution
Click here to see answer by richwmiller(9135)

Question 246856: 4x - 17y = 23
find the X intercept.
Click here to see answer by richwmiller(9135)

Question 246740: how long is a guy wire reaching from the top of a 50 foot pole to a point on the ground 120 feet from the base of the pole.
I got b=109
Click here to see answer by richwmiller(9135)

Question 246858: x+2y=4
2x-y=1
If I am asked to solve by Gaussian Elimination, is that the same as solving by the addition method, also known as the elimination method? Confusing terms??
Click here to see answer by solver91311(16885)

Question 246813: 2x-2y=-2
x-4y=5 find the ordered pairs

Click here to see answer by checkley77(12569)

Question 246935: x- 2y = 1
y = -3x + 10
I'm wondering how to solve this linear equation?
Click here to see answer by checkley77(12569)

Question 246854: Find the equation of the line satisfying the given conditions. Then give the slope of the line.
A vertical line through the point (5, -1)
Click here to see answer by stanbon(57347)

Question 246961: 7x+2x=3x+72
Click here to see answer by justinz(4)

Question 247053: I am stuck with this problem.
Write each equation in slope-intercept form.
y – 3 = - 3(x - 6) Exercise
Click here to see answer by solver91311(16885)

Question 247079: how would you put y-2=5(x-2) in slope- intercept form?
Click here to see answer by nerdybill(6959)

Question 247069: what is the slope of y=-5x+3
Click here to see answer by edjones(7569)

Question 247107: Write the equation of the line that goes through the point (1,3) and is parallel to the line y=-3x+3/5. Write your equation in slope-intercept form.
Click here to see answer by nerdybill(6959)

Question 247144: what is the equation 6x-y=1 and goes through the points (-5,-5) and is a parallel line?
Click here to see answer by stanbon(57347)

Question 247165: solve for y in 2y + 5=-3y-10
Click here to see answer by College Student(505)

Question 247167: Determine whether the graph of the are parallel.
x+13=y
2y=6x-3
Click here to see answer by College Student(505)

Question 247140: what is the solution set of x+6/14=5/7+x-1/5
Click here to see answer by College Student(505)

Question 247166: FIND THE SLOPE OF THE LINE WITH SLOPE -7 AND Y-INTERCEPT 4.
Click here to see answer by College Student(505)

Question 247277: Hi, I am having such trouble with these equations. My book goes over one example in which does not help me for this and others. Is there a simpler way of solving these equations? If not, a nice step-by-step would be great! I have a final next week and cannot get this to sink in. Here's an example equation.
15x-10y=-1
15y=-2+5x
I'm supposed to solve using substitution. When I add part of the equation to another, I get lost? I'm supposed to end up with an ordered pair.
Thank you so much!
Lise
Click here to see answer by richwmiller(9135)

Question 247335: Find an equation of the line that has a y-intercept of 2 that is parallel to the graph of the line 4x + 2y = 8
Click here to see answer by checkley77(12569)

Question 247386: Using the discriminant, determine the number of x-intercepts the graph of the equation will have. Do not graph the equation.
y = x^2 - 4x + 3
Click here to see answer by checkley77(12569)

Question 247489: what is the slope of A(20,-5) and B(4,-9)?
i have tried to get the answer, but it never seems to match the answer the teacher has given us which is 1/4.
Click here to see answer by checkley77(12569)

Question 247552: Please help me solve this:
find the y-intercept: A(20,-5) B(4,-9)

Click here to see answer by checkley77(12569)

Question 247531: 3t+4=-8
huh?
Click here to see answer by checkley77(12569)

Question 247583: (1)By looking at a linear equation, how can you tell if the corresponding line is parallel to the x-axis?
(2)By looking at a linear equation, how can you tell if the line forms a 45-degree angle with the x-axis?
Click here to see answer by oberobic(2304)

Question 247654: graphing the equation y = x. What are the x and y intercepts?
Click here to see answer by College Student(505)

Question 247667: graph the equations y = 3x and y = -3x
Click here to see answer by oberobic(2304)

Question 247668: graph the equation y = 3x + 2.
Click here to see answer by oberobic(2304)

Question 247749: How do I graph the equation using the slope and the y-intercept
y = 9/7x + 8
Click here to see answer by stanbon(57347)

Question 247839: 7x+2y=-8
8y=4x
is this equation a dependent, inconsistent, or independent system.?
Click here to see answer by stanbon(57347)

Question 247839: 7x+2y=-8
8y=4x
is this equation a dependent, inconsistent, or independent system.?
Click here to see answer by richwmiller(9135)

Question 247823: Please help with the following equation:
Write an equation of the line containing the specified point and parallel to the indicated line (3,-4), 5x-6y=4 I think I need to plug the points 3 and -4 in for x and y and solve but I am confused how to remove them both from the same side of the equation. Thank you for any help!
Click here to see answer by Alan3354(30993)

Question 247684: Graph the line with slope 1/3 passing through the points (-1,-1)
Can you please help me graph this and show me how?
Click here to see answer by ankor@dixie-net.com(15652)

Question 247962: I have a problem that I do not understand how to do
Solve the system of equations by graphing, then classify the system
6x+y=7
7x+8y=-26
Can someone help me out I also need to see a graph so I can see what I'm doing wrong. Thank you so much
Click here to see answer by Alan3354(30993)

Question 248027: how do use the slope and y intercept to graph the following equations, y=2x-3 and y=2/3x-4.
Click here to see answer by richwmiller(9135)

Question 247998: I have another one I don't understand it says, A disc jockey must play 14 commercial spots during 1 hour of a radio show, each commercial is either 30 seconds or 60 seconds long, if the total commercial time during 1 hour is 11 minutes how many 30 second commercials were played that hour? and how many 60 second commercials were played that hour?
Can someone please help? thank you
Click here to see answer by ankor@dixie-net.com(15652)

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