Tutors Answer Your Questions about Graphs (FREE)
Question 360160: As you know my brother Jim is an avid fisherman. He varies the depth at which he fishes according to the following function: D(t)=-t^2+10t where t is measured in hours. Estimate the time when he fishes at the greatest depth and tell me that depth.
Click here to see answer by ewatrrr(24785)   |
Question 360446: Find the equation of the line with the given points.
Answer y =
(1,6, - 3) and (5/6, 3)
Ok I get very confused with frractions and know that I am suppose to do the
3 - (-3)
5/6 - 1)
I am unsure first how to get that slope with the fraction there. Once I get the slope and put it in the correct form of y = mx + b, how would I get the b point?
Click here to see answer by Alan3354(69443)  |
Question 360442: Find an equation of the line with the given points
(-5, - 7) (-3, -8)
I did
-8 - (-7)
-3 - (-5) = -1/2 (correct?)
And then I am not sure what to do to get it in the y = mx + b form
I believe it would be y = -1/2x +b But how do i get that b?
Thank you
Click here to see answer by Alan3354(69443) |
Question 360456: Please help. I am unable to get this question. I think I am on overload with all of these different types of questions asked ( i am no math major, that is for sure)!
Write an equation ofr the given point and perpendicular to the given line:
(3,-4); 5x + 6y = 7
I don't mean to dump this problem on you or that I have tried to work it., it is just not registering in my brain. Thank you sooo much for your help!
Click here to see answer by scott8148(6628)  |
Question 360456: Please help. I am unable to get this question. I think I am on overload with all of these different types of questions asked ( i am no math major, that is for sure)!
Write an equation ofr the given point and perpendicular to the given line:
(3,-4); 5x + 6y = 7
I don't mean to dump this problem on you or that I have tried to work it., it is just not registering in my brain. Thank you sooo much for your help!
Click here to see answer by ewatrrr(24785) |
Question 360454: Hello, if you could help me with a problem I would be ever so grateful! I do not know where to start on this one. I have reviewed my notes but cannot seem to figure it out.
Write an equation of the line containing a given point and perpendicular to the given line.
(6,7); 4x + y =5
Thank you for any assistance you can give.
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 360554: A student has at most $4 to spend on pens at $0.25 each and notebooks at $0.40 each.
a.) Write an inequality that limits the possibilities for the number of pens (x) and the number of notebooks (y) that can be purchased.
b.) Graph the inequality in the first quadrant.
Click here to see answer by JBarnum(2146)  |
Question 360593: I know I am doing something wrong here because I just cannot grasp this problem, and others like it. Please help:
Write an equationn of the line containing the given point and parallel to the given line. Express in the form y=mx+b
(-7,8); 4x=9y+7
Thanky ou
Click here to see answer by stanbon(75887) |
Question 360437: Find the equation of the line given the slope and points.
y =
m = 2/3 (8, -2)
I have tried working this, but always get confused when there are fractions included.
This is what I have so far:
y - ( -2) = 2/3(x-8)
Ok. Now what happens with the y + 2 = 2/3(x -8 )
is it 2y.
Please helpe try to figure this one.!!!
Thank you for your continued assistance!
Click here to see answer by mananth(16946)  |
Question 360683: here's the math problem:y=2x+1
here's what i did: x|y
-2 -4 y=-2(-2)+1=-4
-1 -3 y=-2(-1)+1=-3
0 1 y=-2(0)+1 =1
1 1 y=-2(1)+1=1
2 3 y=-2(2)+1=3
the we have to graph the x|y answers on a graph and when we graph it has to make a line or else we did something wrong.....my teacher did the problem above and when i graphed it didn't make a straight line..but he insist that he did it right HELP
Click here to see answer by ewatrrr(24785) |
Question 360683: here's the math problem:y=2x+1
here's what i did: x|y
-2 -4 y=-2(-2)+1=-4
-1 -3 y=-2(-1)+1=-3
0 1 y=-2(0)+1 =1
1 1 y=-2(1)+1=1
2 3 y=-2(2)+1=3
the we have to graph the x|y answers on a graph and when we graph it has to make a line or else we did something wrong.....my teacher did the problem above and when i graphed it didn't make a straight line..but he insist that he did it right HELP
Click here to see answer by Theo(13342)  |
Question 361035: . Joe’s electric made 25 customer calls last week and 22 calls this week. How many calls must bee made next week in order to maintain an average of 20 calls for the three week period.
At least ? calls must be made to maintain an average of 20 calls .
Click here to see answer by mananth(16946) |
Question 360987: My home work ? is a firm produces both am and am/fm car radios. the am radios take 15 hours to produce and the am/fm radios take 20 hours to produce. the number of production hours is limited to 300 hours per week. the plant's capacity is limited to a total of 18 radios per week, and existing orders require that at least 4 am radios and at least 3 am/fm radios br produced per week. Write a system of inequalities reppresenting the situation. In this case let x = am radios and y = am/fm radios. (use LTE for less than or equal to and GTE for greater than or equal to)
I'm so lost.
Click here to see answer by ankor@dixie-net.com(22740) |
Question 361205: Marty has a circular irrigation system. A single sprinkler is placed in the center of his square field. If the sprinkler sprays water just to the four edges of the field, what percent of the field is not watered?
if r = 1 the square is 4
the circle is pie
4 - pie
_______ = 100 = 21.46 %
4
Click here to see answer by Alan3354(69443) |
Question 361497: Trying to help my daughter with Question #54 on page 299 of McDougal Little Algebra 1.
An In-line skater practices ar a race track. In two trials the skater travles the same distance going from a standstill to his top racing speed. He then travels at his top racing speed for different distances.
Trial 1, Time at Top Speed 24 seconds, total distance traveled 300 meters.
Trial 2, Time at Top Speed 29 seconds, Total distance traveled 350 meters.
A. Model -Write an equation that gives the total distance traveled (in meters) as a function of time (in seconds) at top racing speed.
B. - Justify -What do the rate of change and initial value in your equation represent? Explain you answer using unit analysis.
C. Predict - One lap around the race track is 200 meters. The skater starts at a standstill and completes 3 laps. Predict the number of seconds the skater travels at his top racing speed. Explain your method.
Click here to see answer by scott8148(6628) |
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