The homework was given to you as a worksheet and a PDF of the worksheet has also been e-mailed to you. You may use this post as the start of your new conversations about this homework.
i have done the worksheet all except for q 1 part d. i am stuck on the equations. its started as y=x(1.5)-1= y=x(o.25)+3 and now is 1.5x-1/y=0.25x+3/y. i dont know how to go on from here. help
Okay my dear students, I have read the comments and there are many things to consider. First of all, Mishal, thank you for pointing out that you are not getting my e-mails. I must have overlooked your e-mail address by mistake. That has now been corrected.
Next, there seems to be a concern about how to get the equations of the lines from the graphs. Well, ask yourself, what are two things you need for an equation of a line?
Gradient and y-intercept.
How can you find the gradient? Well, you need at least two points on the line. So use the graph and get two points that are easy to see on the line.
Okay, now for the questions about 1 d. Well, first at least tell me what you don't get. Do you have the equations of the lines? Falah seems to be the only one who asks me a specific question. So it is easier to answer that. I can't answer comments like "I don't get it"! So please help me help you by being a bit more specific.
Now, Saadia is asking a question that we have done many times over with different situations. Creating the equations of lines should be fairly simple by now. Saadia, look at the worksheet called "Knowing where to draw the line" and see the last question that we did. There we created an equation from the graph of a line by using two points.
Also, we can get intercepts without actually having them given to us from a graph. If you did the homework from the text book or even if you payed attention in class, we discussed ways of getting the y-intercept by finding the gradient and then using one of the points on the line to plug in values for x and for y and get the value of that extra "something"!
Make sure to read my hint for question 1 d. Remember, when you have the two equations of the lines, then solving them simultaneously is a breeze. There were two methods you have learned for solving simultaneous equations: Substitution and Elimination. Ring a bell?
Falah, judging from the equations you have shared, both your lines for question 1 are with positive slopes/gradients. Is that the case? Are both lines increasing? Or is one of them decreasing?
Duaa and Saadia, This is the part where you have to THINK and apply yourself. We did speak about the dotted lines in class before as one of them representing the change in x and the other the change in y.
So, first you have to identify which dotted line corresponds to which change. part a is asking about the change in x. So think about it and then use the coordinates to find the length of the dotted lines.
Once you're done with that, you can easily use the pythagorean theorem for part c.
Again, don't worry, you have some time to think and work. Sometimes, if you spend an hour on the same problem and are getting no where then you can do some of the following:
1. Ask someone to help you a little, but not too much.
2. Look at the notes from class and some of the worksheets we have done and then figure something out.
3. Step away from the problem for some time and come back to it and things start to make more sense
i have done the worksheet all except for q 1 part d. i am stuck on the equations. its started as y=x(1.5)-1= y=x(o.25)+3 and now is 1.5x-1/y=0.25x+3/y. i dont know how to go on from here. help
ReplyDeletesir i never get ur emails :(
ReplyDeleteThis comment has been removed by a blog administrator.
ReplyDeletefalah check the HINT
ReplyDeletesir i dont get question 1 part d(intersection) and question 2 also.
ReplyDeleteanonymous. i have checked the hint am stuck halfway in simulaneous eq.
ReplyDeleteduaa and i have same problem in q 1
sir how do v create da equation for L in qs number 1??????and i dont understand qs2 how will we find the intercepts????????????
ReplyDeleteanyone to help me in question 1 part d and question 2
ReplyDeleteanyone to respond to me????????????
ReplyDeleteThis comment has been removed by a blog administrator.
ReplyDeletewho is anonymous?
ReplyDeleteThis comment has been removed by a blog administrator.
ReplyDeletei am guessing that anonynous is one of the guys and can someone please respond to mine and duaas ques
ReplyDeleteThis comment has been removed by a blog administrator.
ReplyDeletecan sumbody help me too>?
ReplyDelete@ anonymous. u know that u will problarly be banned if blogs can ban people.
ReplyDeletealso
where is sir?
why isnt he helphing us?
maybe sir has gone for EiD SHOPPING :) :) LET HIM ENJ0Y FALAH n lets iGnOrE DIS "anonymous".
ReplyDeletei want help please!!!!!!!!!!!!!!
ReplyDeleteOkay my dear students,
ReplyDeleteI have read the comments and there are many things to consider.
First of all, Mishal, thank you for pointing out that you are not getting my e-mails. I must have overlooked your e-mail address by mistake. That has now been corrected.
Next, there seems to be a concern about how to get the equations of the lines from the graphs. Well, ask yourself, what are two things you need for an equation of a line?
Gradient and y-intercept.
How can you find the gradient? Well, you need at least two points on the line. So use the graph and get two points that are easy to see on the line.
Okay, now for the questions about 1 d.
ReplyDeleteWell, first at least tell me what you don't get. Do you have the equations of the lines? Falah seems to be the only one who asks me a specific question. So it is easier to answer that. I can't answer comments like "I don't get it"! So please help me help you by being a bit more specific.
Now, Saadia is asking a question that we have done many times over with different situations. Creating the equations of lines should be fairly simple by now. Saadia, look at the worksheet called "Knowing where to draw the line" and see the last question that we did. There we created an equation from the graph of a line by using two points.
ReplyDeleteAlso, we can get intercepts without actually having them given to us from a graph. If you did the homework from the text book or even if you payed attention in class, we discussed ways of getting the y-intercept by finding the gradient and then using one of the points on the line to plug in values for x and for y and get the value of that extra "something"!
Make sure to read my hint for question 1 d. Remember, when you have the two equations of the lines, then solving them simultaneously is a breeze. There were two methods you have learned for solving simultaneous equations: Substitution and Elimination. Ring a bell?
ReplyDeleteFalah, judging from the equations you have shared, both your lines for question 1 are with positive slopes/gradients. Is that the case? Are both lines increasing? Or is one of them decreasing?
ReplyDeleteFolks, even if I don't get to a certain problem, help each other out!
ReplyDeleteDuaa, tell me what exactly is troubling to you.
ReplyDeletequestion two part a, how to find the lenght by using the coordinates.
ReplyDeletesir how will find 2a and b i mean the length by using the dotted line ...!?
ReplyDeleteDuaa and Saadia,
ReplyDeleteThis is the part where you have to THINK and apply yourself. We did speak about the dotted lines in class before as one of them representing the change in x and the other the change in y.
So, first you have to identify which dotted line corresponds to which change. part a is asking about the change in x. So think about it and then use the coordinates to find the length of the dotted lines.
Once you're done with that, you can easily use the pythagorean theorem for part c.
Again, don't worry, you have some time to think and work. Sometimes, if you spend an hour on the same problem and are getting no where then you can do some of the following:
1. Ask someone to help you a little, but not too much.
2. Look at the notes from class and some of the worksheets we have done and then figure something out.
3. Step away from the problem for some time and come back to it and things start to make more sense