NinjaDevo

I agree with anonymous, it is the same thing

If you think about it, 0.25 is the same thing as 1/4.

So this is saying that multiplying by 1/4 is the same thing as dividing by 4.

This is true. Remember when you want to divide by a number, you can multiply by it's reciprocal. So for example

40 ÷ 4 = 10

40 * 1/4 = 40/4 = 10

Just to prove the point, take some random numbers and multiply them by 0.25, then take that same number and divide it by 4.

-----------

4 ÷ 4 = 1

4*1/4 = 4/4 = 1

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10 ÷ 4 = 2.5

10 *1/4 = 10/4 = 2.5

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There you go. It works.

Nice answer CPhill.

I actually like yours better than mine, because you only used one of each of the numbers given. I think this is what it was meant for.

If you think about it, if you could use endless amounts of any number, you would come to the answer of 873 eventually just by adding and suctracting numbers!

Alright, I'll try my best to answer this.

Beatriz wants to show attendance and temperature, and want's to pursuade the city's Parks Deparment to put in more gazebos.

Let's label the X axis "temperature" and the Y axis "attendance."

For the sake of this graph, let's say that attendence goes down with high temperatures, up with medium temperatures, and down again with low temperatures.

The low attendance with high temperatures would hopefully pursuade the Park's Department to put in more gazebos.

The intervals will depend on the data she collects. For example, if the high attendence is 30 and the low attendence is 0, it would make sence to have each interval of the Y axis go up by 5. If the high attendence is 5 and the low 0, it would be more reasonable to go by intervals of 1. Also, the lines themselves would depend on the data she collects.

This should give Beatriz the information she needs to create a graph.

Hopefully this answers your question.

It'd be easier for me to create a graph and show you if we had the actual information. I'm not so good with the theoretical stuff. :)

What does the "e" mean anyway?

6x - 8y + 15 = 0 

-8y+15= -6x

-8y= -6x -15

8y=6x+15

y = 6/8x+15/8

y = 3/4x+15/8

Aquí está un gráfico:

2+2=4!                

Thanks rosala.

I'm not much of a flower person myself, but that was pretty thoughtful. :)

No problem. :)

Hmm.. that shouldn't be happening.

Let's put the two values of x in the original equation to check it.

Your answer:

4x+(-2)=11x+68

4(10)+(-2)=11(10)+68

40-2=110+68

38 ≠ 178

My answer:

4x+(-2)=11x+68

4(-10)+(-2)=11(-10)+68

(-40)+(-2)=(-110)+68

-42 = -42

Does this make sence? Tell me if it doesn't and I can try to explain it differently.

Your answer has a little flaw in it rosala. :)

Where you went from

-7x = 70

to

x = 70/7

you dropped the minus sign.

So this should really be

x = 70/-7

and then 

x = -10

Those minuses are tricky, always got to watch them.