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

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Question 290432: allie ode her bike for 2 hours at 7 miles per hour and then for 3 hours at 5 miles per hour.how far did allie ride in all
Click here to see answer by checkley77(12569)

Question 290498: Transalte to an inequality. The average speed, s, was between 60 and 130 mph.

Click here to see answer by richwmiller(9135)

Question 290597: f(x)=4x-3 h(x)=-5x+7
solve: f(-3)+h(2)
Click here to see answer by user_dude2008(1861)

Question 290558: How do we know if a system of equations represents the same line? Provide an example and show your work, using the slope-intercept equation. You do not need to provide a graph.
Click here to see answer by richwmiller(9135)

Question 290502: 2y=x+2
(0,4)
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Question 290502: 2y=x+2
(0,4)
Click here to see answer by slippin143(1)

Question 290776: Find an equation of the line that passes through (2,2) and is perpendicular to y=2x-6. need help thanks.
Click here to see answer by Greenfinch(383)

Question 290847: what is the slope of the line 3x-2y=5
Click here to see answer by richwmiller(9135)

Question 290842: Find the slope, if it exists x+9y=18
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Question 290804: find the slope and y intercept of the line 3Y+7X+7=9+7x
Click here to see answer by checkley77(12569)

Question 290436: 1)What is equations 5x+5y=-13 and 7x-3y=19 solved by the elimination method?
Thank You,for any help.
Laura
Click here to see answer by richwmiller(9135)

Question 291065: What is the y=mx+b form of the following:
1.5x - y = 10

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Question 291029: FIND LINEAR FUNCTION SLOPE 1/5 AND Y-INTERCEPT (0,8/7)
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Question 291103: how to solve:

Question: Solve The System By Substitution.
x=2+y
4x-3y=11
I Have no clue what to do! Help, Pls. Thank's.
Click here to see answer by jim_thompson5910(28476)

Question 291103: how to solve:

Question: Solve The System By Substitution.
x=2+y
4x-3y=11
I Have no clue what to do! Help, Pls. Thank's.
Click here to see answer by brucewill(101)

Question 291228: 3x+2y-6=0
Click here to see answer by naynaymusick(1)

Question 291188: The sum of three numbers is 62. The second number is equal to the first number diminished by 4. The third number is four times the first. What are the numbers?
Which three expressions could be used to represent the numbers?
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Question 291258: Y=5x

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Question 291181: Sheri drove southeast from Albuquerque to Roswell and then south to Carlsbad. She average 75 mph along the route from Albuquerque to Roswell and averaged 70 mph from Roswell to Carlsbad. She covered the entire 220 miles in 3 hours. How long did she take to drive from Albuquerque to Roswell?
A) 2 hours
B) 1 Hour
C) 1.5 hours
d) 2.5 hours
Click here to see answer by Grinnell(63)

Question 291303: Is y-5=x a linear equation? I think it is, iv'e done a graph but I think I might have done it wrong. Thank you for your time.
-Autumn-
Click here to see answer by checkley77(12569)

Question 291309: Write the linear equation x = 1/3 y – 2/3 in standard form.
Click here to see answer by stanbon(57219)

Question 291340: y+10x=-170 graph please
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Question 291349: For the following system of linear equations, find the value of M so that the solution set to the system is {(6,8)}.
x-y=-2
Mx+y=-4
M is equal to ______
Click here to see answer by richwmiller(9135)

Question 291312: Find the slope and intercept. in the equations given 8x-4y=20
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Question 291508: . You sell premium toasters and are making a pricing decision. At a price of $100 (or “p = $100”) you predict that you can sell 30 of these premium toasters at your Scottsdale, Arizona location. If the price is raised to $110 you predict that you can sell 25 of these premium toasters at your Scottsdale, Arizona location. Find the equation of the line and you can write your answer in the following form: p = mx + b. Normally in this class, you would probably use the “y = mx + b” format. You are basically substituting the variable “y” with “p”. (20% of grade)

2. A company’s revenue is the amount of money that comes in from sales before business costs are subtracted. For a single product, you can find the revenue by multiplying the quantity of the product sold, x, by the demand equation, p. The Revenue equation is “R = xp”. You are advising a local company that sells hamburgers at your state fair and have determined that the demand equation is:
p = -x + 300. Substitute this equation for “p” into the previously mentioned Revenue equation. (20% of grade)

3. A local computer company found the following Profit Equation for their new laptop:

–x2 + 66x – 800

Using “p = 0” for the breakeven point, find the breakeven values (Hint: Try the numbers “50” and “16” when factoring). (20% of grade)

4. Your toaster company’s sales were $12,000,000 in 2007 and $11,000,000 in 2009. Write your toaster company’s 2007 and 2009 sales in scientific notation. (20% of grade)

5. Using the above sales numbers in for your toaster company in 2007 and 2009 and by showing your work using scientific notation, find the percentage growth or percentage loss between 2007 and 2009. (20% of grade)

Click here to see answer by Deina(147)

Question 291613: By looking at two linear equations, how can you tell that the corresponding lines are parallel?
Click here to see answer by stanbon(57219)

Question 291551: Find the average rate of change for the function over the given interval.
y=√2x-1 between x=1 x=5
Answer is 1/2
Could you please show steps for this!!
√ = squareroot
Click here to see answer by stanbon(57219)

Question 291685: Please help me, i am dumbfounded by this question!!!
Write an equation in point slope form of the line that goes through the point (-9,-3) and has a slope of 3/4.
Click here to see answer by richwmiller(9135)

Question 291670: Calculate the slope of the line passing through the given points:(-2,6)and(-2,2). A.0 B.Undefined C.1 D.-2
Click here to see answer by richwmiller(9135)

Question 291731: What is the eqaution of the parabola that moves the parent graph of: y=x-2 down ten units?

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Question 291743: (-9,3)(-8,-3)

Click here to see answer by unlockmath(1599)

Question 291910: Write an equation of the line tht passes thru the points (2,5) & (0,2) & wht is the equation of the line perpendicular 2 2x+5y=20 & contains the point (10,4)
How do i do this?
Click here to see answer by Alan3354(30959)

Question 292220: What is the equation in slope-interaction form for the line passing through each pair of points?
(9,-1) and (6,-2)
(12,5) and (-4,1)

Click here to see answer by Alan3354(30959)

Question 292254: how do I solve In7/In3
Click here to see answer by Alan3354(30959)

Question 292400: How do I find 3 ordered pairs and the x and y intercepts of 3x + y = 6?
Teacher's directions:
Provide an x/y chart and show your work in finding 3 ordered pairs. •Find the x and y intercepts of the equation.
This is what I've got done so far.
3x + y = 6 lets say x=0
3 * 0 = 0
y = 6 (intercept at 0,6)
3x + y = 6 lets say y=0
y*0= 0
3*2 = 6
x=2 (intercept at 2,0)
Now, I do not know how to find the third ordered pair.
Click here to see answer by oberobic(2304)

Question 292176: My 5th grader just started doing alegebra & Im so confused..can anyone tell me the definitions of the following....point, line, vertex, line segment, plane, vertical angles.....my email is beautynbeast1965@msn.com thx alot
Click here to see answer by richwmiller(9135)

Question 291998: You have been hired by a group of anthropologists to sort out the data that they collected from a trip to Ja-Ji, a remote island in the south Pacific. The people of Ja-Ji do not permit outsiders to count them directly; so, the anthropologists had to collect all sort of other data to get to the population. They fear that they may have missed something and your job is to make that assessment, or better yet, use what they have to get the population of Ja-Ji. This is what their notes say:
People in Ja-Ji are either single or in monogamous unions. 10% of the adult population of Ja-Ji is homosexual and they are all in long term relationships. These homosexual unions constitute one fifth of the unions in Ja-Ji. There are 1,000 children, which constitute half of the single population of Ja-Ji.

Click here to see answer by marcia09(1)

Question 292540: By looking at two linear equations, how can you tell that the corresponding lines are parallel?
Click here to see answer by jim_thompson5910(28476)

Question 292645: J(3,4),K(4,5)
Click here to see answer by Alan3354(30959)

Question 292738: find the slope of the line determined by the equation 6x -3y = 18
Click here to see answer by jim_thompson5910(28476)

Question 292758: Hello there fellow tutor i would like to know what is the equation of the line that has a slope of 4 and passes through the point (3,-10)
Click here to see answer by stanbon(57219)

Question 292898: How do I find the slope of the line with the equation:
2x-3y=-13
Click here to see answer by Fombitz(13828)

Question 292898: How do I find the slope of the line with the equation:
2x-3y=-13
Click here to see answer by Alan3354(30959)

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