Tutors Answer Your Questions about Linear-systems (FREE)
Question 622415: The average home price in Linden Hills, Minneapolis in 2007 was $381,000.
The average home price in Linden Hills, Minneapolis in 2011 was $296,000
Source: http://www.zillow.com/local-info/MN-Minneapolis-home-value/r_5983/
Let year be the x variable and the home price be the y variable.
Generate a linear function that relates year (x) to home price (y).
Estimate what the average home price was in 2009.
Estimate what the average home price will be in 2035. Discuss your answer.
If this trend continues, estimate what year you would predict the average home price will reach $250,000.
Describe in your own words, what the slope of this function tells you.
Give another example where you might use a linear representation to model change over time.
Hint for a- f: You have two points and you are generating the equation of a line given two points. Your points are of the form (x, y) or more specifically (year, home price).
Click here to see answer by ewatrrr(24785)   |
Question 622726: With a y-intercept 10, x-intercept 2, and equation of axis of symmetry x-3 = 0, find the graph equation in standard form.
So I've got two points (0, 10) (2, 0) and half of the vertex (3, k). I don't know how to get this.
The equation is y = a(x-h)^2 + k
Either of the two points could be labelled x and y. I'll use the x-intercept (2, 0). The vertex is used for h, k.
So I've got 0 = a(2 - 3)^2 + k
Two unsolved for variables. Not sure what to do.
Click here to see answer by ewatrrr(24785) |
Question 622748: Find an equation of the line having the given slope and containing the given point. m=5, (4,1) The equation of the line in slope intercept form is y=
There parts I understand and some I do not. Here is what I attempted to do to solve the problem
m= 5, (4, 1)
m=5 and y intercept (4,1)
m=5 and b=1
y=4 times x +1 (this is the part I did not understand)
y=1
Click here to see answer by Alan3354(69443)  |
Question 622748: Find an equation of the line having the given slope and containing the given point. m=5, (4,1) The equation of the line in slope intercept form is y=
There parts I understand and some I do not. Here is what I attempted to do to solve the problem
m= 5, (4, 1)
m=5 and y intercept (4,1)
m=5 and b=1
y=4 times x +1 (this is the part I did not understand)
y=1
Click here to see answer by ewatrrr(24785) |
Question 622631: During the second game of the 2002 Western Conference finals, the Los Angeles Lakers scored a total of 90 points, resulting from a combination of three-point baskets, two-point baskets, and one-point free-throws. There were 11 times as many two-point baskets as three-point baskets and five times as many free-throws as three-point baskets. What combination of scoring accounted for the Lakers 90 points?
Click here to see answer by math-vortex(648)  |
Question 623069: A salesman marks up the price of everything he sells by 20%. The equation for the sales price, p, is p=1.2w, where w is the wholesale cost. What will be the sales price of a sweater with a wholesale cost of $48?
Click here to see answer by rfer(16322) |
Question 623270: I have no idea how to do these, but its solving linear systems.
1) 35x+y=20
1.5x-0.1y=18
2) x+(1/3y)=-2
-8x-(2/3y)=4
Would you mind showing the work? as stated before, I have no idea how to do these, so anything to help me understand would be much appreciated. Thank you!
Click here to see answer by lwsshak3(11628) |
Question 623270: I have no idea how to do these, but its solving linear systems.
1) 35x+y=20
1.5x-0.1y=18
2) x+(1/3y)=-2
-8x-(2/3y)=4
Would you mind showing the work? as stated before, I have no idea how to do these, so anything to help me understand would be much appreciated. Thank you!
Click here to see answer by smmoore(10)  |
Question 623270: I have no idea how to do these, but its solving linear systems.
1) 35x+y=20
1.5x-0.1y=18
2) x+(1/3y)=-2
-8x-(2/3y)=4
Would you mind showing the work? as stated before, I have no idea how to do these, so anything to help me understand would be much appreciated. Thank you!
Click here to see answer by MathTherapy(10552)  |
Question 623736: How do I solve this ? A total of 150 tickets were sold for an annual concert to students and non students. Student tickets were $5 and non students were $8. If the total revenue for the concert was $930, then how many tickets of each were sold ?
Click here to see answer by fcabanski(1391) |
Question 623736: How do I solve this ? A total of 150 tickets were sold for an annual concert to students and non students. Student tickets were $5 and non students were $8. If the total revenue for the concert was $930, then how many tickets of each were sold ?
Click here to see answer by ewatrrr(24785) |
Question 625125: "Tutor" opeodu needs a real tutor because he cannot solve the problem (see below). Hint: answer will be (0, -3):
Question 624942: Please can someone help me with this problem:
Solve using the elimination method.
14x + 18y = -54
-4x - 14y = 42
Answer by opeodu(4) About Me (Show Source):
You can put this solution on YOUR website!
14x+18y=-54------(a)*(-4)
-4x-14y=42-------(b)*(14)
-56x-72y=216
-56x-196y=588
subtract
-72y-(-196y)=216-588
124y=372
y=372/124=3
substitute y=3 in (a)
14x+18y=-54
14x+18(3)=-54
14x=-54-54
14x=-108
x=-108/14=7whole number5 over 7
Click here to see answer by oscargut(2103)  |
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