Math challenge

[Worldwithoutmath]

create a table of values for the equation, x - 2y = 6. Rearrange the equation into the y = mx + b form. Increment x by 1 in each row. Values of x range from -2 to 2

 

[Deleted member 4993]

create a table of values for the equation, x - 2y = 6. Rearrange the equation into the y = mx + b form. Increment x by 1 in each row. Values of x range from -2 to 2

Is it really a math challenge? Not a simple home-work problem??

Please share your work with us.

You need to read the rules of this forum. Please read the post titled "Read before Posting" at the following URL:

http://www.freemathhelp.com/forum/th...217#post322217

We can help - we only help after you have shown your work - or ask a specific question (e.g. "are these correct?")

 

[Worldwithoutmath]

Fine, its math help

I need math help. I am a seven grade and doing a math program.

 

[lightstaz909]

reply to Dennis

I think by him posting the whole question without giving any information about where he is stuck at or the work he has done, means that he is stuck on the whole question. My thoughts on this.

 

[mmm4444bot]

I think by him posting the whole question without giving any information about where he is stuck at or the work he has done, means that he is stuck on the whole question. My thoughts on this.

lightstaz909, I deleted your repost of this thread. Please do not post duplicate threads.

Your friend can read this thread, when they return.

Also, we prefer one exercise per thread. You may create a new thread for that second exercise, if you desire.

Both you and your friend ought to check out the posting guidelines; you may begin at this summary page.

---

worldwithoutmath, if you are confused by the instruction "create a table of values for the equation", then your specific question could be "What is the meaning of 'create a table of values?'". (We need some clue, as to why you're stuck.)

They want you to calculate the values of y for some specific values of x. They give you these values for x: -2, -1, 0, 1, 2

First, solve the given equation for y. This will give you a formula to use.

If you have not solved equations for y, let us know.

Otherwise, show us what you get.

---

Here is a similar example. Create a table of x,y values, using the following equation. Let x go from 0 to 4.

7x - y = 21

STEP 1: Solve for y

y = 7x - 21

Now we have a formula to calculate a value of y (by substituting a number for x).


STEP 2: We substitute the values 0, 1, 2, 3, and 4 for x (one at a time) into the formula for y, and then do the arithmetic on the right-hand side.

y = 7(0) - 21 gives y = -21 when x = 0

y = 7(1) - 21 gives y = -14 when x = 1

y = 7(2) - 21 gives y = -7 when x = 2

y = 7(3) - 21 gives y = 0 when x = 3

y = 7(4) - 21 gives y = 7 when x = 4


STEP 3: To finish the exercise, we arrange these x,y values into table form.

 x    y
--------
 0   -21

 1   -14

 2   -7

 3    0

 4    7

Do you understand my example? If so, follow the same steps for your exercise.

If you have a specific question about my example, please post it.