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Question 543916: When using the substitution method, what expression for x in the second equation would be substituted in the first equation?
4x – 7y = –9
x + 3y = 12
Click here to see answer by stanbon(57246)

Question 544057: If f and g are linear functions such that g(f(x)) = 2x+ 6 and the graph of y = f(g(x)) passes through the origin what is the value of f(g(2011))?
Click here to see answer by stanbon(57246)

Question 544065: Axia College Material
Appendix F
Ticket Sales
Living in or near a metropolitan area has some advantages. Entertainment opportunities are almost endless in a major city. Events occur almost every night, from sporting events to the symphony. Tickets to these events are not available long and can often be modeled by quadratic equations.
Application Practice
Answer the following questions. Use Equation Editor to write mathematical expressions and equations. First, save this file to your hard drive by selecting Save As from the File menu. Click the white space below each question to maintain proper formatting.
1. Suppose you are an event coordinator for a large performance theater. One of the hottest new Broadway musicals has started to tour and your city is the first stop on the tour. You need to supply information about projected ticket sales to the box office manager. The box office manager uses this information to anticipate staffing needs until the tickets sell out. You provide the manager with a quadratic equation that models the expected number of ticket sales for each day x. ( is the day tickets go on sale).

a. Does the graph of this equation open up or down? How did you determine this?
The graph will open down because the coefficient of x^2 is negative.

b. Describe what happens to the tickets sales as time passes.
Over time the ticket sales will increase reach a peak then decrease
c. Use the quadratic equation to determine the last day that tickets will be sold.
Day 25
Note. Write your answer in terms of the number of days after ticket sales begin.

d. Will tickets peak or be at a low during the middle of the sale? How do you know?
The ticket sales will peak during the middle of the sale because the graph opens down looking like an upside down u.
e. After how many days will the peak or low occur? After about 12 days the ticket sales will peak

f. How many tickets will be sold on the day when the peak or low occurs?

g. What is the point of the vertex? How does this number relate to your answers in parts e. and f?

h. How many solutions are there to the equation ? How do you know?

i. What do the solutions represent? Is there a solution that does not make sense? If so, in what ways does the solution not make sense?

Click here to see answer by stanbon(57246)

Question 544134: Please help me help my kiddo with homework. Thanks!
Graph solution to system of inequalities
-x + y ≥ 0
-2x + y ≥ 3
Click here to see answer by lwsshak3(6469)

Question 544507: Can you show the graph of 3y-7x<-15 with work showing how you got that. Thank you
Click here to see answer by lwsshak3(6469)

Question 544491: For the equation y = 3x + 5 write the equation of the lines in slope intercept form that pass through point (-4,1) and are parallel and perpendicular to the given line.
Click here to see answer by mananth(12270)

Question 544123: How do you write an equation in slope intercept form for the line that passes through (3, 7) and (7, 4)?
Click here to see answer by JBarnum(2044)

Question 544619: Find the slope of the line.
45x-5y=3.4
Click here to see answer by friesr(113)

Question 544847: The problem I have is 4x – 3 = x – y. I need to graph this but I don't understand how to get there, teacher didn't cover an equation like this. I have tried subtracting x from both sides leaving 3x - 3 = -y but I don't see how you would get graph points from that. Could you please explain how I can solve this problem? I don't want just the answer, i'd like to know how to solve for future reference.
Again, graph 4x-3=x-y
Click here to see answer by saifoo.khan(162)

Question 544851: graph the linear equation
6x-3y=18
Click here to see answer by saifoo.khan(162)

Question 544851: graph the linear equation
6x-3y=18
Click here to see answer by rapaljer(4667)

Question 544862: How do you graph 3x + y = 9?
Click here to see answer by saifoo.khan(162)

Question 544862: How do you graph 3x + y = 9?
Click here to see answer by rapaljer(4667)

Question 544771: How would I type an equation in the slope intercept form for the points (2,5) and (6,8)?
Click here to see answer by saifoo.khan(162)

Question 544969: Write the equation of the line with m=-4 and pass through (3, -1)
Click here to see answer by cira554(7)

Question 545070: Plot (0,2) on the coordinate axes.

Click here to see answer by kapil.ideal(3)

Question 544675: I need help graphing the following equations:
2x+5y=12
4x+3y=2
3x-2y=10
If you could help me graph the first one, I am sure I could figure out the rest.
Thank you,
Emily
Click here to see answer by ankor@dixie-net.com(15638)

Question 545115: Can you please graph -7x+7y=-49

Click here to see answer by saifoo.khan(162)

Question 545150: find an equation of the containing the given pair of points (2,5) and (6,7)
Click here to see answer by saifoo.khan(162)

Question 545090: Are the following lines parallel, perpendicular, or neither:
a.) 9x - 12y = 17 and 3x - 4y = 17
b.) y = -3 and x = -3
c.) y = 3x + 4 and y = -3x - 2
How do I solve these. Please explain and show work so I can follow along/understand what I am suppose to be doing.

Click here to see answer by cira554(7)

Question 545248: wat is the answer of y+y{2x+4}=9?

Click here to see answer by Alan3354(30983)

Question 545243: I want to find the slope, y-intercept and angle of this equation:
14x -y -sqrt(2) = 0
I know the answer but I want the method please
Anwer: Slope = 14, y-intercept = sqrt(2) and the degrees = about 85.9
Thank you
Click here to see answer by Alan3354(30983)

Question 545341: write an equation of a line that passes through the origin and has a slope of 3

Click here to see answer by rfer(12647)

Question 545316: graph each line:
1. y=x+2
2. y=-x-5
Click here to see answer by jim_thompson5910(28504)

Question 545238: Find the Equation of a Line Given That You Know Two Points it Passes Through.
(1/2,-3) and (-2,1)
Thank you
Click here to see answer by KMST(1868)

Question 545479: the pitch, or frequency, of a vibrating string varies directly with the square root of tension. if a string vibrates at a frequency of 144 hertz due to a tension of 2 pounds, find the frequency when the tension is 18 pounds.
Click here to see answer by Alan3354(30983)

Question 545560: how do i write aN Equation in slope intercept form for y+3=3(x-1)?????
Click here to see answer by jerryguo41(162)

Question 545797: Please can someone help me solve this problem?
In slope intercept form, give the equation of the line that contains
(1-2),(-2,1)

Thank you for your help
Click here to see answer by mananth(12270)

Question 545769: what is the equation in standard form that passes through the point (2,5) and has the same slope as the graph of 3x+y=9?
Click here to see answer by mananth(12270)

Question 545929: can you explain x and y intercepts for the problem x^2+4x-5
Click here to see answer by htmentor(788)

Question 545940: without graphing answer the following questions about the system, x-y=7, 9x=9y+4. thank you
Click here to see answer by JBarnum(2044)

Question 545936: 3x+4y>8 and I need to graph it?

Click here to see answer by JBarnum(2044)

Question 545941: without graphing answer the following questions about the system, x-y=7,
9x=9y+4.
Does this system have a solution?
yes or no?
Is the system inconsistent, are the equations dependent, or neither?
What does this graph look like? Intersecting lines? One line? Or parallel lines?
Thank you for your help

Click here to see answer by lmeeks54(105)

Question 546089: Hello how are you?..While i was just wondering if you guys can explain to me in a simple way to write equations in slope intercept form. Thank you so much!
Click here to see answer by Alan3354(30983)

Question 545839: No one has been able to solve this for me
Explain how exponnential functions are relevant and applicable to real life
situations.
Think of a real life situation that can be represented by an exponential
function.
Write a function to represent the situation.
Label all vaiables.
Explain how you wrote the function.
Graph your equation.

pleasee help

Click here to see answer by ankor@dixie-net.com(15638)

Question 546145: graph equation:
3y-18x=9
Click here to see answer by nyc_function(2733)

Question 546237: find the slope of the line passing through the points (-8, -4) and (2,-7)
Click here to see answer by jim_thompson5910(28504)

Question 546247: GRAPH f(x)=-(x+3)+2 whats the Y intercept?
Click here to see answer by KMST(1868)

Question 546651: Demonstrate the triangle with vertices are (4,-1), (-2,3) and (-6,-3) is a right triangle. (Prove that the Pythagorean theorem is verified)
The answer is supposed to be: Sides measure respectively sqrt(52), sqrt(52) and sqrt(104)
Help me please. I don't know how todo this.
Thank you
Click here to see answer by 11045troberts(1)

Question 546905: Determine the standard form of the equation of the line that contains (8,9) and (-9,-8)
Click here to see answer by mananth(12270)

Question 546904: find the general form of the equation of the line that passes through the points (-7,-1) and (6,7)
Click here to see answer by mananth(12270)

Question 546903: write an equation of the line that passes through the point (3,-2) with slope of 3
Click here to see answer by mananth(12270)

Question 546937: What would the x intercept of y=-2x+6 be?
Click here to see answer by rfer(12647)

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